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Finding the Fourth Proportional to 16,819.60, 25,230.60 and 5,132.80

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Solution

The fourth proportional to 16,819.60, 25,230.60 and 5,132.80 is: 7,699.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,819.60 : 25,230.60 = 5,132.80 : x
  2. Step 2: Convert to fraction form
    16,819.60/25,230.60 = 5,132.80/x
  3. Step 3: Cross multiply
    16,819.60x = 25,230.60 × 5,132.80
  4. Step 4: Simplify right side
    16,819.60x = 129,503,623.68
  5. Step 5: Solve for x
    x = 129,503,623.68/16,819.60
  6. Step 6: Final answer
    x = 7,699.57

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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.