Finding the Fourth Proportional to 10,361,409.70, 15,514,120.95 and 8,121,921.70
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Solution
The fourth proportional to 10,361,409.70, 15,514,120.95 and 8,121,921.70 is: 12,160,939.41
Step by Step Solution
- Step 1: Write the proportion equation
10,361,409.70 : 15,514,120.95 = 8,121,921.70 : x - Step 2: Convert to fraction form
10,361,409.70/15,514,120.95 = 8,121,921.70/x - Step 3: Cross multiply
10,361,409.70x = 15,514,120.95 × 8,121,921.70 - Step 4: Simplify right side
10,361,409.70x = 126,004,475,600,229.61 - Step 5: Solve for x
x = 126,004,475,600,229.61/10,361,409.70 - Step 6: Final answer
x = 12,160,939.41
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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.