Home / 18,279.11-27,415.20-8,909.71

Finding the Fourth Proportional to 18,279.11, 27,415.20 and 8,909.71

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Solution

The fourth proportional to 18,279.11, 27,415.20 and 8,909.71 is: 13,362.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.11 : 27,415.20 = 8,909.71 : x
  2. Step 2: Convert to fraction form
    18,279.11/27,415.20 = 8,909.71/x
  3. Step 3: Cross multiply
    18,279.11x = 27,415.20 × 8,909.71
  4. Step 4: Simplify right side
    18,279.11x = 244,261,437.04
  5. Step 5: Solve for x
    x = 244,261,437.04/18,279.11
  6. Step 6: Final answer
    x = 13,362.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.