Finding the Fourth Proportional to 18,660,276.60, 27,990,414.90 and 15,471,630.60
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Solution
The fourth proportional to 18,660,276.60, 27,990,414.90 and 15,471,630.60 is: 23,207,445.90
Step by Step Solution
- Step 1: Write the proportion equation
18,660,276.60 : 27,990,414.90 = 15,471,630.60 : x - Step 2: Convert to fraction form
18,660,276.60/27,990,414.90 = 15,471,630.60/x - Step 3: Cross multiply
18,660,276.60x = 27,990,414.90 × 15,471,630.60 - Step 4: Simplify right side
18,660,276.60x = 433,057,359,673,535.94 - Step 5: Solve for x
x = 433,057,359,673,535.94/18,660,276.60 - Step 6: Final answer
x = 23,207,445.90
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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.