SSC CHSL 15 Oct 2020 Shift 3 Paper

Question : 62 of 100

Marks: +1, -0

The fourth proportional to 10,12 , 15 is

Solution:

Let the fourth proportional to 10,12 and 15 be

x

.
∴

{10}/{12}={15}/{x}

⇒

x={15 ×12}/{10}=18

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