Home / 20,544.31-28,351.14-11,112.85

Finding the Fourth Proportional to 20,544.31, 28,351.14 and 11,112.85

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Solution

The fourth proportional to 20,544.31, 28,351.14 and 11,112.85 is: 15,335.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.31 : 28,351.14 = 11,112.85 : x
  2. Step 2: Convert to fraction form
    20,544.31/28,351.14 = 11,112.85/x
  3. Step 3: Cross multiply
    20,544.31x = 28,351.14 × 11,112.85
  4. Step 4: Simplify right side
    20,544.31x = 315,061,966.15
  5. Step 5: Solve for x
    x = 315,061,966.15/20,544.31
  6. Step 6: Final answer
    x = 15,335.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.