Home / 12,517.12-17,270.24-7,479.10

Finding the Fourth Proportional to 12,517.12, 17,270.24 and 7,479.10

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Solution

The fourth proportional to 12,517.12, 17,270.24 and 7,479.10 is: 10,319.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,517.12 : 17,270.24 = 7,479.10 : x
  2. Step 2: Convert to fraction form
    12,517.12/17,270.24 = 7,479.10/x
  3. Step 3: Cross multiply
    12,517.12x = 17,270.24 × 7,479.10
  4. Step 4: Simplify right side
    12,517.12x = 129,165,851.98
  5. Step 5: Solve for x
    x = 129,165,851.98/12,517.12
  6. Step 6: Final answer
    x = 10,319.14

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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.