Finding the Fourth Proportional to 21,207,113.92, 29,266,204.80 and 11,788,789.18
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Solution
The fourth proportional to 21,207,113.92, 29,266,204.80 and 11,788,789.18 is: 16,268,744.53
Step by Step Solution
- Step 1: Write the proportion equation
21,207,113.92 : 29,266,204.80 = 11,788,789.18 : x - Step 2: Convert to fraction form
21,207,113.92/29,266,204.80 = 11,788,789.18/x - Step 3: Cross multiply
21,207,113.92x = 29,266,204.80 × 11,788,789.18 - Step 4: Simplify right side
21,207,113.92x = 345,013,118,485,904.06 - Step 5: Solve for x
x = 345,013,118,485,904.06/21,207,113.92 - Step 6: Final answer
x = 16,268,744.53
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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.