Finding the Fourth Proportional to 20,723,515.20, 28,598,479.92 and 11,430,877.68
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Solution
The fourth proportional to 20,723,515.20, 28,598,479.92 and 11,430,877.68 is: 15,774,627.16
Step by Step Solution
- Step 1: Write the proportion equation
20,723,515.20 : 28,598,479.92 = 11,430,877.68 : x - Step 2: Convert to fraction form
20,723,515.20/28,598,479.92 = 11,430,877.68/x - Step 3: Cross multiply
20,723,515.20x = 28,598,479.92 × 11,430,877.68 - Step 4: Simplify right side
20,723,515.20x = 326,905,725,799,456.19 - Step 5: Solve for x
x = 326,905,725,799,456.19/20,723,515.20 - Step 6: Final answer
x = 15,774,627.16
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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.