Home / 20,629.75-28,469.58-11,198.29

Finding the Fourth Proportional to 20,629.75, 28,469.58 and 11,198.29

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Solution

The fourth proportional to 20,629.75, 28,469.58 and 11,198.29 is: 15,453.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.75 : 28,469.58 = 11,198.29 : x
  2. Step 2: Convert to fraction form
    20,629.75/28,469.58 = 11,198.29/x
  3. Step 3: Cross multiply
    20,629.75x = 28,469.58 × 11,198.29
  4. Step 4: Simplify right side
    20,629.75x = 318,810,613.02
  5. Step 5: Solve for x
    x = 318,810,613.02/20,629.75
  6. Step 6: Final answer
    x = 15,453.93

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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.