Which ratio forms a proportion with 16 20?

Answer: 4/5 forms a proportion with 16/20.

Read, more elaboration about it is given here. Similarly, you may ask, what is the ratio of 16 to 20?

80%

Subsequently, question is, which ratio forms a proportion with 7 14? Notice that 7/14 and 36/72 are both equal to 1/2, so the two ratios are equal.

In respect to this, do the fractions 3/4 and 16 20 form a proportion?

These products are not equal therefore 3/4 is not equivalent to 16/20. An alternative proof: 20/4=5 (the ratio of the denominators). These ratios are different therefore the 3/4 is not equivalent to 16/20.

What is 15 out of 20 as a percentage?

75%