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Finding the Fourth Proportional to 18,793.35, 28,151.69 and 8,902.58

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Solution

The fourth proportional to 18,793.35, 28,151.69 and 8,902.58 is: 13,335.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.35 : 28,151.69 = 8,902.58 : x
  2. Step 2: Convert to fraction form
    18,793.35/28,151.69 = 8,902.58/x
  3. Step 3: Cross multiply
    18,793.35x = 28,151.69 × 8,902.58
  4. Step 4: Simplify right side
    18,793.35x = 250,622,487.09
  5. Step 5: Solve for x
    x = 250,622,487.09/18,793.35
  6. Step 6: Final answer
    x = 13,335.70

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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.