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Finding the Fourth Proportional to 13,229.68, 18,264.36 and 9,003.52

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Solution

The fourth proportional to 13,229.68, 18,264.36 and 9,003.52 is: 12,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,229.68 : 18,264.36 = 9,003.52 : x
  2. Step 2: Convert to fraction form
    13,229.68/18,264.36 = 9,003.52/x
  3. Step 3: Cross multiply
    13,229.68x = 18,264.36 × 9,003.52
  4. Step 4: Simplify right side
    13,229.68x = 164,443,530.55
  5. Step 5: Solve for x
    x = 164,443,530.55/13,229.68
  6. Step 6: Final answer
    x = 12,429.89

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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.