Finding the Fourth Proportional to 19,928,113.20, 29,899,168.20 and 8,572,042.80
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Solution
The fourth proportional to 19,928,113.20, 29,899,168.20 and 8,572,042.80 is: 12,861,074.55
Step by Step Solution
- Step 1: Write the proportion equation
19,928,113.20 : 29,899,168.20 = 8,572,042.80 : x - Step 2: Convert to fraction form
19,928,113.20/29,899,168.20 = 8,572,042.80/x - Step 3: Cross multiply
19,928,113.20x = 29,899,168.20 × 8,572,042.80 - Step 4: Simplify right side
19,928,113.20x = 256,296,949,494,798.97 - Step 5: Solve for x
x = 256,296,949,494,798.97/19,928,113.20 - Step 6: Final answer
x = 12,861,074.55
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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.