Home / 28,023.20-38,671.68-15,447.68

Finding the Fourth Proportional to 28,023.20, 38,671.68 and 15,447.68

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Solution

The fourth proportional to 28,023.20, 38,671.68 and 15,447.68 is: 21,317.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,023.20 : 38,671.68 = 15,447.68 : x
  2. Step 2: Convert to fraction form
    28,023.20/38,671.68 = 15,447.68/x
  3. Step 3: Cross multiply
    28,023.20x = 38,671.68 × 15,447.68
  4. Step 4: Simplify right side
    28,023.20x = 597,387,737.70
  5. Step 5: Solve for x
    x = 597,387,737.70/28,023.20
  6. Step 6: Final answer
    x = 21,317.61

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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.