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Question

What is the third proportional to 10 and 20?

This question was previously asked in
SSC CGL 2017 (Tier 1) Previous Year Paper (16-Aug-2017) (Shift 1)
The correct answer is

40

The third proportional a/b = b/c

where a = 10, b = 20 and c is the third proportional.

∴ The third proportional to 10 and 20 = 202/10 = 40

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  1. Find the third proportional to 6 and 12.

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Important Questions from Third Proportional

  1. What is the third proportional to the numbers 9 and 45?

  2. Find the third proportional to 6 and 12.

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