Quantitative Aptitude Ques 1092

Question: The fourth proportional to 0.12, 0.21, 8 is

Options:

A) 8.9

B) 56

C) 14

D) 17

Show Answer

Answer:

Correct Answer: C

Solution:

  • [c] Let the fourth proportional be x. Then, $ \frac{0.12}{0.21}=\frac{8}{x} $

$ \Rightarrow $ $ x=8\times \frac{0.21}{0.12} $

$ \Rightarrow $ $ x=8\times \frac{21}{12} $
$ \Rightarrow $ $ x=14 $

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