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Finding the Fourth Proportional to 18,091.96, 27,097.84 and 13,901.12

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Solution

The fourth proportional to 18,091.96, 27,097.84 and 13,901.12 is: 20,820.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,091.96 : 27,097.84 = 13,901.12 : x
  2. Step 2: Convert to fraction form
    18,091.96/27,097.84 = 13,901.12/x
  3. Step 3: Cross multiply
    18,091.96x = 27,097.84 × 13,901.12
  4. Step 4: Simplify right side
    18,091.96x = 376,690,309.08
  5. Step 5: Solve for x
    x = 376,690,309.08/18,091.96
  6. Step 6: Final answer
    x = 20,820.87

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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.