Home / 28,481.87-42,731.46-20,177.96

Finding the Fourth Proportional to 28,481.87, 42,731.46 and 20,177.96

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Solution

The fourth proportional to 28,481.87, 42,731.46 and 20,177.96 is: 30,273.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,481.87 : 42,731.46 = 20,177.96 : x
  2. Step 2: Convert to fraction form
    28,481.87/42,731.46 = 20,177.96/x
  3. Step 3: Cross multiply
    28,481.87x = 42,731.46 × 20,177.96
  4. Step 4: Simplify right side
    28,481.87x = 862,233,476.96
  5. Step 5: Solve for x
    x = 862,233,476.96/28,481.87
  6. Step 6: Final answer
    x = 30,273.06

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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.