Finding the Fourth Proportional to 21,347,189.70, 29,458,770.12 and 11,557,555.62
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Solution
The fourth proportional to 21,347,189.70, 29,458,770.12 and 11,557,555.62 is: 15,949,236.36
Step by Step Solution
- Step 1: Write the proportion equation
21,347,189.70 : 29,458,770.12 = 11,557,555.62 : x - Step 2: Convert to fraction form
21,347,189.70/29,458,770.12 = 11,557,555.62/x - Step 3: Cross multiply
21,347,189.70x = 29,458,770.12 × 11,557,555.62 - Step 4: Simplify right side
21,347,189.70x = 340,471,374,158,694.06 - Step 5: Solve for x
x = 340,471,374,158,694.06/21,347,189.70 - Step 6: Final answer
x = 15,949,236.36
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.