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Finding the Fourth Proportional to 18,834.42, 28,251.81 and 4,983.42

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Solution

The fourth proportional to 18,834.42, 28,251.81 and 4,983.42 is: 7,475.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,834.42 : 28,251.81 = 4,983.42 : x
  2. Step 2: Convert to fraction form
    18,834.42/28,251.81 = 4,983.42/x
  3. Step 3: Cross multiply
    18,834.42x = 28,251.81 × 4,983.42
  4. Step 4: Simplify right side
    18,834.42x = 140,790,634.99
  5. Step 5: Solve for x
    x = 140,790,634.99/18,834.42
  6. Step 6: Final answer
    x = 7,475.18

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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.