I'll convert their contribution to percents to make it easier to understand.
Max painted 1/8, that equals 12.5 percent.
Shen painted 14 percent, as given.
Jake painted 0.12, which is 12 percent.
Todd painted 0.2 which equals 0.20, or 20 percent.
List of least to greatest by the amount each one painted the house:
Jake, Max, Shen, Todd.