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Finding the Fourth Proportional to 18,902.43, 28,353.66 and 8,502.03

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Solution

The fourth proportional to 18,902.43, 28,353.66 and 8,502.03 is: 12,753.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.43 : 28,353.66 = 8,502.03 : x
  2. Step 2: Convert to fraction form
    18,902.43/28,353.66 = 8,502.03/x
  3. Step 3: Cross multiply
    18,902.43x = 28,353.66 × 8,502.03
  4. Step 4: Simplify right side
    18,902.43x = 241,063,667.93
  5. Step 5: Solve for x
    x = 241,063,667.93/18,902.43
  6. Step 6: Final answer
    x = 12,753.05

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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.