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Finding the Fourth Proportional to 10,007.39, 13,805.87 and 7,025.15

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Solution

The fourth proportional to 10,007.39, 13,805.87 and 7,025.15 is: 9,691.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,007.39 : 13,805.87 = 7,025.15 : x
  2. Step 2: Convert to fraction form
    10,007.39/13,805.87 = 7,025.15/x
  3. Step 3: Cross multiply
    10,007.39x = 13,805.87 × 7,025.15
  4. Step 4: Simplify right side
    10,007.39x = 96,988,203.48
  5. Step 5: Solve for x
    x = 96,988,203.48/10,007.39
  6. Step 6: Final answer
    x = 9,691.66

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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.