Home / 20,629.39-28,469.15-11,198.56

Finding the Fourth Proportional to 20,629.39, 28,469.15 and 11,198.56

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Solution

The fourth proportional to 20,629.39, 28,469.15 and 11,198.56 is: 15,454.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.39 : 28,469.15 = 11,198.56 : x
  2. Step 2: Convert to fraction form
    20,629.39/28,469.15 = 11,198.56/x
  3. Step 3: Cross multiply
    20,629.39x = 28,469.15 × 11,198.56
  4. Step 4: Simplify right side
    20,629.39x = 318,813,428.43
  5. Step 5: Solve for x
    x = 318,813,428.43/20,629.39
  6. Step 6: Final answer
    x = 15,454.33

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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.