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SSC CGL 2021 PYQ — Question 53

SSC CGL - 23 Aug 2021 - Shift 1 • Quantitative Aptitude • Q53

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Fourth proportion to 12, 18, 6 is equal to the third proportion to 4 k. What is the value of k?

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Correct answer: C

Explanation

The correct answer is Option 3 i.e 6.

Let's assume the fourth proportion is X.

⇒ 12 : 18 : 6 : X

⇒ 1218=6x\frac{12}{18}=\frac{6}{x}

⇒ x = 9

Now, according to the question,

⇒ 9 = 6/4k

⇒ k = 3 × 2 = 6