Advertisements
Advertisements
Question
Find the value of the unknown in the following proportion :
5 : 12 :: 15 : x
Advertisements
Solution
5 : 12 :: 15 : x
⇒ 5 × X = 12 x 15
⇒ x = `(12 xx 15)/5`
⇒ x = 36
APPEARS IN
RELATED QUESTIONS
Using the properties of proportion, solve for x, given `(x^4 + 1)/(2x^2) = 17/8`.
The following numbers, K + 3, K + 2, 3K – 7 and 2K – 3 are in proportion. Find k.
Check whether the following numbers are in continued proportion.
2, 4, 8
If x, 12 and 16 are in continued proportion! find x.
Find the fourth proportional to:
2xy, x2, y2
If `x/a = y/b = z/c`, show that `x^3/a^3 - y^3/b^3 = z^3/c^3 = (xyz)/(zbc).`
What number must be added to each of the numbers 16, 26 and 40 so that the resulting numbers may be in continued proportion?
In a fort, 550 men had provisions for 28 days. How many days will it last for 700 men?
If a, b, c and d are in proportion, prove that: (a4 + c4) : (b4 + d4) = a2 c2 : b2 d2.
A particular high school has 1500 students 50 teachers and 5 administrators. If the school grows to 1800 students and the ratios are maintained, then find the number of teachers and administrators
