Home / 18,318.21-25,279.16-9,934.71

Finding the Fourth Proportional to 18,318.21, 25,279.16 and 9,934.71

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Solution

The fourth proportional to 18,318.21, 25,279.16 and 9,934.71 is: 13,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,318.21 : 25,279.16 = 9,934.71 : x
  2. Step 2: Convert to fraction form
    18,318.21/25,279.16 = 9,934.71/x
  3. Step 3: Cross multiply
    18,318.21x = 25,279.16 × 9,934.71
  4. Step 4: Simplify right side
    18,318.21x = 251,141,073.97
  5. Step 5: Solve for x
    x = 251,141,073.97/18,318.21
  6. Step 6: Final answer
    x = 13,709.91

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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.