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Finding the Fourth Proportional to 18,663.68, 28,005.24 and 8,273

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Solution

The fourth proportional to 18,663.68, 28,005.24 and 8,273 is: 12,413.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.68 : 28,005.24 = 8,273 : x
  2. Step 2: Convert to fraction form
    18,663.68/28,005.24 = 8,273/x
  3. Step 3: Cross multiply
    18,663.68x = 28,005.24 × 8,273
  4. Step 4: Simplify right side
    18,663.68x = 231,687,350.52
  5. Step 5: Solve for x
    x = 231,687,350.52/18,663.68
  6. Step 6: Final answer
    x = 12,413.81

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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.