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Finding the Fourth Proportional to 18,747.73, 28,127.04 and 8,873.43

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Solution

The fourth proportional to 18,747.73, 28,127.04 and 8,873.43 is: 13,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.73 : 28,127.04 = 8,873.43 : x
  2. Step 2: Convert to fraction form
    18,747.73/28,127.04 = 8,873.43/x
  3. Step 3: Cross multiply
    18,747.73x = 28,127.04 × 8,873.43
  4. Step 4: Simplify right side
    18,747.73x = 249,583,320.55
  5. Step 5: Solve for x
    x = 249,583,320.55/18,747.73
  6. Step 6: Final answer
    x = 13,312.72

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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.