Question

Which number should be added to each of the numbers 12, 16 and 21 so that the

resulting numbers would be in continued proportion?​

Answer 1

Answer:

6 should be added

Step-by-step explanation:

as according to the pattern we can see 4 was added to 12 and then 5 was added to 16 ,therefore 6 should be added to 21 .

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Answer 2

Answer:

Let the number x be subtracted from 12, 16 and 21 so that resultant numbers are in continued proportion.

∴ (12 − x), (16 − x), (21 − x) are in continued proportion.

Thus, the number −4 must be subtracted from 12, 16 and 21 so that resultant numbers are in continued proportion.

FINAL ANSWER IS −4