Home / 18,489.64-27,730.38-5,339.15

Finding the Fourth Proportional to 18,489.64, 27,730.38 and 5,339.15

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Solution

The fourth proportional to 18,489.64, 27,730.38 and 5,339.15 is: 8,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489.64 : 27,730.38 = 5,339.15 : x
  2. Step 2: Convert to fraction form
    18,489.64/27,730.38 = 5,339.15/x
  3. Step 3: Cross multiply
    18,489.64x = 27,730.38 × 5,339.15
  4. Step 4: Simplify right side
    18,489.64x = 148,056,658.38
  5. Step 5: Solve for x
    x = 148,056,658.38/18,489.64
  6. Step 6: Final answer
    x = 8,007.55

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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.