Finding the Fourth Proportional to 15,118,586.70, 20,863,544.67 and 8,591,703.90
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Solution
The fourth proportional to 15,118,586.70, 20,863,544.67 and 8,591,703.90 is: 11,856,491.73
Step by Step Solution
- Step 1: Write the proportion equation
15,118,586.70 : 20,863,544.67 = 8,591,703.90 : x - Step 2: Convert to fraction form
15,118,586.70/20,863,544.67 = 8,591,703.90/x - Step 3: Cross multiply
15,118,586.70x = 20,863,544.67 × 8,591,703.90 - Step 4: Simplify right side
15,118,586.70x = 179,253,398,109,063.25 - Step 5: Solve for x
x = 179,253,398,109,063.25/15,118,586.70 - Step 6: Final answer
x = 11,856,491.73
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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.