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Finding the Fourth Proportional to 13,902.62, 20,855.96 and 4,040.62

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Solution

The fourth proportional to 13,902.62, 20,855.96 and 4,040.62 is: 6,061.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.62 : 20,855.96 = 4,040.62 : x
  2. Step 2: Convert to fraction form
    13,902.62/20,855.96 = 4,040.62/x
  3. Step 3: Cross multiply
    13,902.62x = 20,855.96 × 4,040.62
  4. Step 4: Simplify right side
    13,902.62x = 84,270,951.90
  5. Step 5: Solve for x
    x = 84,270,951.90/13,902.62
  6. Step 6: Final answer
    x = 6,061.52

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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.