This is the concept of scale factors; The length of the larger figure will be calculated as follows; linear scale factor=[length of larger figure]/[length of smaller figure] plugging the values in the above formula we get: let the length of the larger figure be x; thus; x/12=4/3 multiplying both sides by 12 to solve for x we get: 12*x/12=4/3x12 x=16 thus the length of the larger figure is x=16