Finding the Fourth Proportional to 12,689,432.05, 17,511,438.42 and 6,888,217.72
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Solution
The fourth proportional to 12,689,432.05, 17,511,438.42 and 6,888,217.72 is: 9,505,752.50
Step by Step Solution
- Step 1: Write the proportion equation
12,689,432.05 : 17,511,438.42 = 6,888,217.72 : x - Step 2: Convert to fraction form
12,689,432.05/17,511,438.42 = 6,888,217.72/x - Step 3: Cross multiply
12,689,432.05x = 17,511,438.42 × 6,888,217.72 - Step 4: Simplify right side
12,689,432.05x = 120,622,600,427,332.81 - Step 5: Solve for x
x = 120,622,600,427,332.81/12,689,432.05 - Step 6: Final answer
x = 9,505,752.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.