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Finding the Fourth Proportional to 18,732, 28,102.62 and 5,584.32

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Solution

The fourth proportional to 18,732, 28,102.62 and 5,584.32 is: 8,377.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,732 : 28,102.62 = 5,584.32 : x
  2. Step 2: Convert to fraction form
    18,732/28,102.62 = 5,584.32/x
  3. Step 3: Cross multiply
    18,732x = 28,102.62 × 5,584.32
  4. Step 4: Simplify right side
    18,732x = 156,934,022.92
  5. Step 5: Solve for x
    x = 156,934,022.92/18,732
  6. Step 6: Final answer
    x = 8,377.86

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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.