Finding the Fourth Proportional to 19,689,962.79, 29,534,944.20 and 5,313,007.52
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Solution
The fourth proportional to 19,689,962.79, 29,534,944.20 and 5,313,007.52 is: 7,969,511.28
Step by Step Solution
- Step 1: Write the proportion equation
19,689,962.79 : 29,534,944.20 = 5,313,007.52 : x - Step 2: Convert to fraction form
19,689,962.79/29,534,944.20 = 5,313,007.52/x - Step 3: Cross multiply
19,689,962.79x = 29,534,944.20 × 5,313,007.52 - Step 4: Simplify right side
19,689,962.79x = 156,919,380,580,537.91 - Step 5: Solve for x
x = 156,919,380,580,537.91/19,689,962.79 - Step 6: Final answer
x = 7,969,511.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.