Home / 20,793.12-31,163.40-9,092.40

Finding the Fourth Proportional to 20,793.12, 31,163.40 and 9,092.40

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Solution

The fourth proportional to 20,793.12, 31,163.40 and 9,092.40 is: 13,627.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.12 : 31,163.40 = 9,092.40 : x
  2. Step 2: Convert to fraction form
    20,793.12/31,163.40 = 9,092.40/x
  3. Step 3: Cross multiply
    20,793.12x = 31,163.40 × 9,092.40
  4. Step 4: Simplify right side
    20,793.12x = 283,350,098.16
  5. Step 5: Solve for x
    x = 283,350,098.16/20,793.12
  6. Step 6: Final answer
    x = 13,627.11

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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.