Ratio and Proportion | Find the value of X

RATIO and PROPORTION
Find the value of X of the following
1.) 12 : 4 = 6 : X
2.) X : 20 = 3 : 15
3.) 16 : 8 = X : 1

Find the Missing Terms
1.) m/6 = 3/18
2.) 2/12 = n/18
3.) 4 : 12 = n : 9
4.) a : 9 = 5 : 45

[Khim]

Thank you very much, I was struggling so much until I found this, this was very helpful...I thought it was hard😅