Home / 20,865.28-28,794.51-11,433.82

Finding the Fourth Proportional to 20,865.28, 28,794.51 and 11,433.82

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Solution

The fourth proportional to 20,865.28, 28,794.51 and 11,433.82 is: 15,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.28 : 28,794.51 = 11,433.82 : x
  2. Step 2: Convert to fraction form
    20,865.28/28,794.51 = 11,433.82/x
  3. Step 3: Cross multiply
    20,865.28x = 28,794.51 × 11,433.82
  4. Step 4: Simplify right side
    20,865.28x = 329,231,244.33
  5. Step 5: Solve for x
    x = 329,231,244.33/20,865.28
  6. Step 6: Final answer
    x = 15,778.90

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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.