Home / 20,745.52-31,086.76-15,202.54

Finding the Fourth Proportional to 20,745.52, 31,086.76 and 15,202.54

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Solution

The fourth proportional to 20,745.52, 31,086.76 and 15,202.54 is: 22,780.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.52 : 31,086.76 = 15,202.54 : x
  2. Step 2: Convert to fraction form
    20,745.52/31,086.76 = 15,202.54/x
  3. Step 3: Cross multiply
    20,745.52x = 31,086.76 × 15,202.54
  4. Step 4: Simplify right side
    20,745.52x = 472,597,609.62
  5. Step 5: Solve for x
    x = 472,597,609.62/20,745.52
  6. Step 6: Final answer
    x = 22,780.71

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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.