Home / 13,331.20-18,402.24-11,931.52

Finding the Fourth Proportional to 13,331.20, 18,402.24 and 11,931.52

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Solution

The fourth proportional to 13,331.20, 18,402.24 and 11,931.52 is: 16,470.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.20 : 18,402.24 = 11,931.52 : x
  2. Step 2: Convert to fraction form
    13,331.20/18,402.24 = 11,931.52/x
  3. Step 3: Cross multiply
    13,331.20x = 18,402.24 × 11,931.52
  4. Step 4: Simplify right side
    13,331.20x = 219,566,694.60
  5. Step 5: Solve for x
    x = 219,566,694.60/13,331.20
  6. Step 6: Final answer
    x = 16,470.14

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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.