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Finding the Fourth Proportional to 18,305.52, 27,441.84 and 8,439.76

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Solution

The fourth proportional to 18,305.52, 27,441.84 and 8,439.76 is: 12,652.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.52 : 27,441.84 = 8,439.76 : x
  2. Step 2: Convert to fraction form
    18,305.52/27,441.84 = 8,439.76/x
  3. Step 3: Cross multiply
    18,305.52x = 27,441.84 × 8,439.76
  4. Step 4: Simplify right side
    18,305.52x = 231,602,543.56
  5. Step 5: Solve for x
    x = 231,602,543.56/18,305.52
  6. Step 6: Final answer
    x = 12,652.06

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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.