Finding the Fourth Proportional to 20,876,879.20, 31,305,073.56 and 8,578,614.60
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Solution
The fourth proportional to 20,876,879.20, 31,305,073.56 and 8,578,614.60 is: 12,863,711.98
Step by Step Solution
- Step 1: Write the proportion equation
20,876,879.20 : 31,305,073.56 = 8,578,614.60 : x - Step 2: Convert to fraction form
20,876,879.20/31,305,073.56 = 8,578,614.60/x - Step 3: Cross multiply
20,876,879.20x = 31,305,073.56 × 8,578,614.60 - Step 4: Simplify right side
20,876,879.20x = 268,554,161,095,889.94 - Step 5: Solve for x
x = 268,554,161,095,889.94/20,876,879.20 - Step 6: Final answer
x = 12,863,711.98
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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.