Home / 20,793.15-31,221.32-18,159.03

Finding the Fourth Proportional to 20,793.15, 31,221.32 and 18,159.03

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Solution

The fourth proportional to 20,793.15, 31,221.32 and 18,159.03 is: 27,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.15 : 31,221.32 = 18,159.03 : x
  2. Step 2: Convert to fraction form
    20,793.15/31,221.32 = 18,159.03/x
  3. Step 3: Cross multiply
    20,793.15x = 31,221.32 × 18,159.03
  4. Step 4: Simplify right side
    20,793.15x = 566,948,795.72
  5. Step 5: Solve for x
    x = 566,948,795.72/20,793.15
  6. Step 6: Final answer
    x = 27,266.13

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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.