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Finding the Fourth Proportional to 30,379.60, 41,907 and 17,801.92

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Solution

The fourth proportional to 30,379.60, 41,907 and 17,801.92 is: 24,556.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,379.60 : 41,907 = 17,801.92 : x
  2. Step 2: Convert to fraction form
    30,379.60/41,907 = 17,801.92/x
  3. Step 3: Cross multiply
    30,379.60x = 41,907 × 17,801.92
  4. Step 4: Simplify right side
    30,379.60x = 746,025,061.44
  5. Step 5: Solve for x
    x = 746,025,061.44/30,379.60
  6. Step 6: Final answer
    x = 24,556.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.