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Finding the Fourth Proportional to 18,098.73, 27,135.14 and 8,871.21

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Solution

The fourth proportional to 18,098.73, 27,135.14 and 8,871.21 is: 13,300.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,098.73 : 27,135.14 = 8,871.21 : x
  2. Step 2: Convert to fraction form
    18,098.73/27,135.14 = 8,871.21/x
  3. Step 3: Cross multiply
    18,098.73x = 27,135.14 × 8,871.21
  4. Step 4: Simplify right side
    18,098.73x = 240,721,480.96
  5. Step 5: Solve for x
    x = 240,721,480.96/18,098.73
  6. Step 6: Final answer
    x = 13,300.46

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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.