# The Fourth Proportional to 5, 8, 15 is - Mathematics

MCQ

The fourth proportional to 5, 8, 15 is

• 18

• 24

• 19

• 20

#### Solution

24
Explanation:
Let the fourth proportional to 5, 8, 15 be x.
Then, 5:8::15:x
⇒ 5x=(8xx15)

⇒ x=((8xx15))/5=24

Concept: Ratio and Proportion (Entrance Exam)
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