Home / 18,691.39-28,032.31-5,540.70

Finding the Fourth Proportional to 18,691.39, 28,032.31 and 5,540.70

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Solution

The fourth proportional to 18,691.39, 28,032.31 and 5,540.70 is: 8,309.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.39 : 28,032.31 = 5,540.70 : x
  2. Step 2: Convert to fraction form
    18,691.39/28,032.31 = 5,540.70/x
  3. Step 3: Cross multiply
    18,691.39x = 28,032.31 × 5,540.70
  4. Step 4: Simplify right side
    18,691.39x = 155,318,732.06
  5. Step 5: Solve for x
    x = 155,318,732.06/18,691.39
  6. Step 6: Final answer
    x = 8,309.64

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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.