Finding the Fourth Proportional to 18,722,438.20, 28,086,281.70 and 7,360,244.20
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Solution
The fourth proportional to 18,722,438.20, 28,086,281.70 and 7,360,244.20 is: 11,041,398.02
Step by Step Solution
- Step 1: Write the proportion equation
18,722,438.20 : 28,086,281.70 = 7,360,244.20 : x - Step 2: Convert to fraction form
18,722,438.20/28,086,281.70 = 7,360,244.20/x - Step 3: Cross multiply
18,722,438.20x = 28,086,281.70 × 7,360,244.20 - Step 4: Simplify right side
18,722,438.20x = 206,721,891,981,991.12 - Step 5: Solve for x
x = 206,721,891,981,991.12/18,722,438.20 - Step 6: Final answer
x = 11,041,398.02
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1.5x scale
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.