Home / 18,838.80-28,258.42-5,691.76

Finding the Fourth Proportional to 18,838.80, 28,258.42 and 5,691.76

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Solution

The fourth proportional to 18,838.80, 28,258.42 and 5,691.76 is: 8,537.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.80 : 28,258.42 = 5,691.76 : x
  2. Step 2: Convert to fraction form
    18,838.80/28,258.42 = 5,691.76/x
  3. Step 3: Cross multiply
    18,838.80x = 28,258.42 × 5,691.76
  4. Step 4: Simplify right side
    18,838.80x = 160,840,144.62
  5. Step 5: Solve for x
    x = 160,840,144.62/18,838.80
  6. Step 6: Final answer
    x = 8,537.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.