Home / 20,447.32-28,217.60-11,951.68

Finding the Fourth Proportional to 20,447.32, 28,217.60 and 11,951.68

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Solution

The fourth proportional to 20,447.32, 28,217.60 and 11,951.68 is: 16,493.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447.32 : 28,217.60 = 11,951.68 : x
  2. Step 2: Convert to fraction form
    20,447.32/28,217.60 = 11,951.68/x
  3. Step 3: Cross multiply
    20,447.32x = 28,217.60 × 11,951.68
  4. Step 4: Simplify right side
    20,447.32x = 337,247,725.57
  5. Step 5: Solve for x
    x = 337,247,725.57/20,447.32
  6. Step 6: Final answer
    x = 16,493.49

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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.