is 6/15.0=14/35.0 porportional

To determine if two ratios are proportional, we need to check if the cross products are equal.

Cross product of 6/15 and 14/35:
(6 * 35) / (15 * 1) = 210 / 15 = 14

Since the cross products are equal to 14, the ratios 6/15 and 14/35 are proportional.