Ziajiango Ziajiango Math Answered Identify if the given ratio are proportion. Write YES if they are propotion and NO if it is not______11) 9:30 , 12:50______12) 12: 21 , 10:15______13) 3:8 , 2:5______14) 3:7 , 9:21______15) 5:1 , 20:1