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Finding the Fourth Proportional to 18,339.82, 27,509.92 and 5,859.78

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Solution

The fourth proportional to 18,339.82, 27,509.92 and 5,859.78 is: 8,789.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.82 : 27,509.92 = 5,859.78 : x
  2. Step 2: Convert to fraction form
    18,339.82/27,509.92 = 5,859.78/x
  3. Step 3: Cross multiply
    18,339.82x = 27,509.92 × 5,859.78
  4. Step 4: Simplify right side
    18,339.82x = 161,202,079.02
  5. Step 5: Solve for x
    x = 161,202,079.02/18,339.82
  6. Step 6: Final answer
    x = 8,789.73

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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.