Home / 20,629.92-28,469.52-11,198.64

Finding the Fourth Proportional to 20,629.92, 28,469.52 and 11,198.64

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Solution

The fourth proportional to 20,629.92, 28,469.52 and 11,198.64 is: 15,454.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.92 : 28,469.52 = 11,198.64 : x
  2. Step 2: Convert to fraction form
    20,629.92/28,469.52 = 11,198.64/x
  3. Step 3: Cross multiply
    20,629.92x = 28,469.52 × 11,198.64
  4. Step 4: Simplify right side
    20,629.92x = 318,819,905.45
  5. Step 5: Solve for x
    x = 318,819,905.45/20,629.92
  6. Step 6: Final answer
    x = 15,454.25

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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.