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a : b and c : d are in inverse proportion, then a : b = ...........
a : b and c : d are in inverse proportion, then a: b = d: c.
If 10 : 12 and 24 : x is in inverse proportion, then 10 : 12 = ...........
For four numbers a, b, c, d if a : b = c : d, then a : c = b : d. Which property of proportion is this?
For four numbers a, b, c, d if a : b = c : d, then b : a = d : c. Which property of proportion is this?