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Finding the Fourth Proportional to 18,479, 27,722.15 and 9,450.34

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Solution

The fourth proportional to 18,479, 27,722.15 and 9,450.34 is: 14,177.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479 : 27,722.15 = 9,450.34 : x
  2. Step 2: Convert to fraction form
    18,479/27,722.15 = 9,450.34/x
  3. Step 3: Cross multiply
    18,479x = 27,722.15 × 9,450.34
  4. Step 4: Simplify right side
    18,479x = 261,983,743.03
  5. Step 5: Solve for x
    x = 261,983,743.03/18,479
  6. Step 6: Final answer
    x = 14,177.38

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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.