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Finding the Fourth Proportional to 30,249.43, 41,744.05 and 16,819.90

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Solution

The fourth proportional to 30,249.43, 41,744.05 and 16,819.90 is: 23,211.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,249.43 : 41,744.05 = 16,819.90 : x
  2. Step 2: Convert to fraction form
    30,249.43/41,744.05 = 16,819.90/x
  3. Step 3: Cross multiply
    30,249.43x = 41,744.05 × 16,819.90
  4. Step 4: Simplify right side
    30,249.43x = 702,130,600.19
  5. Step 5: Solve for x
    x = 702,130,600.19/30,249.43
  6. Step 6: Final answer
    x = 23,211.37

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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.