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Finding the Fourth Proportional to 18,658.44, 27,984.60 and 5,507.78

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Solution

The fourth proportional to 18,658.44, 27,984.60 and 5,507.78 is: 8,260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.44 : 27,984.60 = 5,507.78 : x
  2. Step 2: Convert to fraction form
    18,658.44/27,984.60 = 5,507.78/x
  3. Step 3: Cross multiply
    18,658.44x = 27,984.60 × 5,507.78
  4. Step 4: Simplify right side
    18,658.44x = 154,132,880.27
  5. Step 5: Solve for x
    x = 154,132,880.27/18,658.44
  6. Step 6: Final answer
    x = 8,260.76

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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.