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Finding the Fourth Proportional to 18,418.82, 27,628.20 and 4,567.82

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Solution

The fourth proportional to 18,418.82, 27,628.20 and 4,567.82 is: 6,851.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.82 : 27,628.20 = 4,567.82 : x
  2. Step 2: Convert to fraction form
    18,418.82/27,628.20 = 4,567.82/x
  3. Step 3: Cross multiply
    18,418.82x = 27,628.20 × 4,567.82
  4. Step 4: Simplify right side
    18,418.82x = 126,200,644.52
  5. Step 5: Solve for x
    x = 126,200,644.52/18,418.82
  6. Step 6: Final answer
    x = 6,851.72

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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.