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Finding the Fourth Proportional to 18,449.88, 25,454.16 and 11,373.72

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Solution

The fourth proportional to 18,449.88, 25,454.16 and 11,373.72 is: 15,691.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.88 : 25,454.16 = 11,373.72 : x
  2. Step 2: Convert to fraction form
    18,449.88/25,454.16 = 11,373.72/x
  3. Step 3: Cross multiply
    18,449.88x = 25,454.16 × 11,373.72
  4. Step 4: Simplify right side
    18,449.88x = 289,508,488.68
  5. Step 5: Solve for x
    x = 289,508,488.68/18,449.88
  6. Step 6: Final answer
    x = 15,691.62

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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.