Finding the Fourth Proportional to 18,138,641.92, 27,207,509.28 and 7,353,057.76
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Solution
The fourth proportional to 18,138,641.92, 27,207,509.28 and 7,353,057.76 is: 11,029,402.76
Step by Step Solution
- Step 1: Write the proportion equation
18,138,641.92 : 27,207,509.28 = 7,353,057.76 : x - Step 2: Convert to fraction form
18,138,641.92/27,207,509.28 = 7,353,057.76/x - Step 3: Cross multiply
18,138,641.92x = 27,207,509.28 × 7,353,057.76 - Step 4: Simplify right side
18,138,641.92x = 200,058,387,241,576 - Step 5: Solve for x
x = 200,058,387,241,576/18,138,641.92 - Step 6: Final answer
x = 11,029,402.76
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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.