Home / 20,628.92-28,468.14-11,197.64

Finding the Fourth Proportional to 20,628.92, 28,468.14 and 11,197.64

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Solution

The fourth proportional to 20,628.92, 28,468.14 and 11,197.64 is: 15,452.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.92 : 28,468.14 = 11,197.64 : x
  2. Step 2: Convert to fraction form
    20,628.92/28,468.14 = 11,197.64/x
  3. Step 3: Cross multiply
    20,628.92x = 28,468.14 × 11,197.64
  4. Step 4: Simplify right side
    20,628.92x = 318,775,983.19
  5. Step 5: Solve for x
    x = 318,775,983.19/20,628.92
  6. Step 6: Final answer
    x = 15,452.87

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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.