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Finding the Fourth Proportional to 18,488.19, 27,731.21 and 5,340.27

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Solution

The fourth proportional to 18,488.19, 27,731.21 and 5,340.27 is: 8,010.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.19 : 27,731.21 = 5,340.27 : x
  2. Step 2: Convert to fraction form
    18,488.19/27,731.21 = 5,340.27/x
  3. Step 3: Cross multiply
    18,488.19x = 27,731.21 × 5,340.27
  4. Step 4: Simplify right side
    18,488.19x = 148,092,122.13
  5. Step 5: Solve for x
    x = 148,092,122.13/18,488.19
  6. Step 6: Final answer
    x = 8,010.09

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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.