Home / 20,629.98-28,469.37-11,198.52

Finding the Fourth Proportional to 20,629.98, 28,469.37 and 11,198.52

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Solution

The fourth proportional to 20,629.98, 28,469.37 and 11,198.52 is: 15,453.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.98 : 28,469.37 = 11,198.52 : x
  2. Step 2: Convert to fraction form
    20,629.98/28,469.37 = 11,198.52/x
  3. Step 3: Cross multiply
    20,629.98x = 28,469.37 × 11,198.52
  4. Step 4: Simplify right side
    20,629.98x = 318,814,809.33
  5. Step 5: Solve for x
    x = 318,814,809.33/20,629.98
  6. Step 6: Final answer
    x = 15,453.96

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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.