Finding the Fourth Proportional to 21,508,612.56, 29,681,511.60 and 11,719,137.18
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Solution
The fourth proportional to 21,508,612.56, 29,681,511.60 and 11,719,137.18 is: 16,172,205.68
Step by Step Solution
- Step 1: Write the proportion equation
21,508,612.56 : 29,681,511.60 = 11,719,137.18 : x - Step 2: Convert to fraction form
21,508,612.56/29,681,511.60 = 11,719,137.18/x - Step 3: Cross multiply
21,508,612.56x = 29,681,511.60 × 11,719,137.18 - Step 4: Simplify right side
21,508,612.56x = 347,841,706,150,161.31 - Step 5: Solve for x
x = 347,841,706,150,161.31/21,508,612.56 - Step 6: Final answer
x = 16,172,205.68
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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.