Question

The fourth proportional to 5, 8, 15 is ______.

विकल्प

• 18

• 20

• 21

• 24

Answer 1

The fourth proportional to 5, 8, 15 is 24.

Explanation:

If the fourth proportional is d, then 5 : 8 = 15 : d.

Hence `d = 8 xx 15/5 = 24`.