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Finding the Fourth Proportional to 20,375.22, 30,555.31 and 7,044.84

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Solution

The fourth proportional to 20,375.22, 30,555.31 and 7,044.84 is: 10,564.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.22 : 30,555.31 = 7,044.84 : x
  2. Step 2: Convert to fraction form
    20,375.22/30,555.31 = 7,044.84/x
  3. Step 3: Cross multiply
    20,375.22x = 30,555.31 × 7,044.84
  4. Step 4: Simplify right side
    20,375.22x = 215,257,270.10
  5. Step 5: Solve for x
    x = 215,257,270.10/20,375.22
  6. Step 6: Final answer
    x = 10,564.66

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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.