Finding the Fourth Proportional to 12,689,431.99, 17,511,438.35 and 6,888,217.66
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Solution
The fourth proportional to 12,689,431.99, 17,511,438.35 and 6,888,217.66 is: 9,505,752.42
Step by Step Solution
- Step 1: Write the proportion equation
12,689,431.99 : 17,511,438.35 = 6,888,217.66 : x - Step 2: Convert to fraction form
12,689,431.99/17,511,438.35 = 6,888,217.66/x - Step 3: Cross multiply
12,689,431.99x = 17,511,438.35 × 6,888,217.66 - Step 4: Simplify right side
12,689,431.99x = 120,622,598,867,913.20 - Step 5: Solve for x
x = 120,622,598,867,913.20/12,689,431.99 - Step 6: Final answer
x = 9,505,752.42
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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.