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Finding the Fourth Proportional to 28,793.62, 39,742.62 and 18,747.16

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Solution

The fourth proportional to 28,793.62, 39,742.62 and 18,747.16 is: 25,875.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.62 : 39,742.62 = 18,747.16 : x
  2. Step 2: Convert to fraction form
    28,793.62/39,742.62 = 18,747.16/x
  3. Step 3: Cross multiply
    28,793.62x = 39,742.62 × 18,747.16
  4. Step 4: Simplify right side
    28,793.62x = 745,061,255.96
  5. Step 5: Solve for x
    x = 745,061,255.96/28,793.62
  6. Step 6: Final answer
    x = 25,875.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.