Pooja writes the ratio x3=y4 to help her increase the size of a two-dimensional shape. If the new value of x is 15 units, what will be the value of y ?

To find the value of y, we can set up a proportion using the given ratio x3=y4 and the new value of x which is 15 units.

We know that x3=y4, so we can write the proportion as:
15 * 3 = y * 4

Solving for y, we get:
45 = 4y
y = 45 / 4
y = 11.25 units

Therefore, the value of y will be 11.25 units.