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Finding the Fourth Proportional to 18,650.52, 27,978.48 and 6,171.84

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Solution

The fourth proportional to 18,650.52, 27,978.48 and 6,171.84 is: 9,258.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,650.52 : 27,978.48 = 6,171.84 : x
  2. Step 2: Convert to fraction form
    18,650.52/27,978.48 = 6,171.84/x
  3. Step 3: Cross multiply
    18,650.52x = 27,978.48 × 6,171.84
  4. Step 4: Simplify right side
    18,650.52x = 172,678,702.00
  5. Step 5: Solve for x
    x = 172,678,702.00/18,650.52
  6. Step 6: Final answer
    x = 9,258.65

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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.