Home / 20,629.31-28,468.76-11,197.86

Finding the Fourth Proportional to 20,629.31, 28,468.76 and 11,197.86

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Solution

The fourth proportional to 20,629.31, 28,468.76 and 11,197.86 is: 15,453.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.31 : 28,468.76 = 11,197.86 : x
  2. Step 2: Convert to fraction form
    20,629.31/28,468.76 = 11,197.86/x
  3. Step 3: Cross multiply
    20,629.31x = 28,468.76 × 11,197.86
  4. Step 4: Simplify right side
    20,629.31x = 318,789,132.86
  5. Step 5: Solve for x
    x = 318,789,132.86/20,629.31
  6. Step 6: Final answer
    x = 15,453.22

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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.