Finding the Fourth Proportional to 15,125,009.92, 20,872,762.52 and 8,249,491.96
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Solution
The fourth proportional to 15,125,009.92, 20,872,762.52 and 8,249,491.96 is: 11,384,434.62
Step by Step Solution
- Step 1: Write the proportion equation
15,125,009.92 : 20,872,762.52 = 8,249,491.96 : x - Step 2: Convert to fraction form
15,125,009.92/20,872,762.52 = 8,249,491.96/x - Step 3: Cross multiply
15,125,009.92x = 20,872,762.52 × 8,249,491.96 - Step 4: Simplify right side
15,125,009.92x = 172,189,686,591,729.34 - Step 5: Solve for x
x = 172,189,686,591,729.34/15,125,009.92 - Step 6: Final answer
x = 11,384,434.62
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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.