Home / 20,433.29-28,198.40-11,481.57

Finding the Fourth Proportional to 20,433.29, 28,198.40 and 11,481.57

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Solution

The fourth proportional to 20,433.29, 28,198.40 and 11,481.57 is: 15,844.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.29 : 28,198.40 = 11,481.57 : x
  2. Step 2: Convert to fraction form
    20,433.29/28,198.40 = 11,481.57/x
  3. Step 3: Cross multiply
    20,433.29x = 28,198.40 × 11,481.57
  4. Step 4: Simplify right side
    20,433.29x = 323,761,846.08
  5. Step 5: Solve for x
    x = 323,761,846.08/20,433.29
  6. Step 6: Final answer
    x = 15,844.83

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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.