Finding the Fourth Proportional to 10,083,685.20, 15,125,527.80 and 8,312,215.20
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Solution
The fourth proportional to 10,083,685.20, 15,125,527.80 and 8,312,215.20 is: 12,468,322.80
Step by Step Solution
- Step 1: Write the proportion equation
10,083,685.20 : 15,125,527.80 = 8,312,215.20 : x - Step 2: Convert to fraction form
10,083,685.20/15,125,527.80 = 8,312,215.20/x - Step 3: Cross multiply
10,083,685.20x = 15,125,527.80 × 8,312,215.20 - Step 4: Simplify right side
10,083,685.20x = 125,726,642,087,182.56 - Step 5: Solve for x
x = 125,726,642,087,182.56/10,083,685.20 - Step 6: Final answer
x = 12,468,322.80
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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.