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Finding the Fourth Proportional to 18,438.63, 27,648.18 and 8,044.71

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Solution

The fourth proportional to 18,438.63, 27,648.18 and 8,044.71 is: 12,062.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.63 : 27,648.18 = 8,044.71 : x
  2. Step 2: Convert to fraction form
    18,438.63/27,648.18 = 8,044.71/x
  3. Step 3: Cross multiply
    18,438.63x = 27,648.18 × 8,044.71
  4. Step 4: Simplify right side
    18,438.63x = 222,421,590.13
  5. Step 5: Solve for x
    x = 222,421,590.13/18,438.63
  6. Step 6: Final answer
    x = 12,062.80

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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.