Home / 20,629.24-28,468.68-11,197.78

Finding the Fourth Proportional to 20,629.24, 28,468.68 and 11,197.78

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Solution

The fourth proportional to 20,629.24, 28,468.68 and 11,197.78 is: 15,453.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.24 : 28,468.68 = 11,197.78 : x
  2. Step 2: Convert to fraction form
    20,629.24/28,468.68 = 11,197.78/x
  3. Step 3: Cross multiply
    20,629.24x = 28,468.68 × 11,197.78
  4. Step 4: Simplify right side
    20,629.24x = 318,786,015.53
  5. Step 5: Solve for x
    x = 318,786,015.53/20,629.24
  6. Step 6: Final answer
    x = 15,453.11

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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.