Ratio and Proportion - Arithmetic Aptitude Questions and Answers

Home / Arithmetic Aptitude / Ratio and Proportion :: Discussion

The fourth proportional to 5, 8, 15 is:

Answer : Option B

Explanation :

Let the fourth proportional to 5, 8, 15 be x.

Then, 5 : 8 : 15 : x

5x = (8 x 15)

x = \( \frac { (8 *15) } { 5 }\) = 24

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