Home / 20,793.15-31,189.73-18,414.79

Finding the Fourth Proportional to 20,793.15, 31,189.73 and 18,414.79

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Solution

The fourth proportional to 20,793.15, 31,189.73 and 18,414.79 is: 27,622.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.15 : 31,189.73 = 18,414.79 : x
  2. Step 2: Convert to fraction form
    20,793.15/31,189.73 = 18,414.79/x
  3. Step 3: Cross multiply
    20,793.15x = 31,189.73 × 18,414.79
  4. Step 4: Simplify right side
    20,793.15x = 574,352,158.06
  5. Step 5: Solve for x
    x = 574,352,158.06/20,793.15
  6. Step 6: Final answer
    x = 27,622.18

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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.