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Finding the Fourth Proportional to 12,468.74, 17,207.52 and 7,163.90

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Solution

The fourth proportional to 12,468.74, 17,207.52 and 7,163.90 is: 9,886.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,468.74 : 17,207.52 = 7,163.90 : x
  2. Step 2: Convert to fraction form
    12,468.74/17,207.52 = 7,163.90/x
  3. Step 3: Cross multiply
    12,468.74x = 17,207.52 × 7,163.90
  4. Step 4: Simplify right side
    12,468.74x = 123,272,952.53
  5. Step 5: Solve for x
    x = 123,272,952.53/12,468.74
  6. Step 6: Final answer
    x = 9,886.56

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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.