Finding the Fourth Proportional to 20,782,915.80, 31,174,373.70 and 15,744,067.80
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Solution
The fourth proportional to 20,782,915.80, 31,174,373.70 and 15,744,067.80 is: 23,616,101.70
Step by Step Solution
- Step 1: Write the proportion equation
20,782,915.80 : 31,174,373.70 = 15,744,067.80 : x - Step 2: Convert to fraction form
20,782,915.80/31,174,373.70 = 15,744,067.80/x - Step 3: Cross multiply
20,782,915.80x = 31,174,373.70 × 15,744,067.80 - Step 4: Simplify right side
20,782,915.80x = 490,811,453,155,336.88 - Step 5: Solve for x
x = 490,811,453,155,336.88/20,782,915.80 - Step 6: Final answer
x = 23,616,101.70
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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.