Home / 40,900.29-61,351.21-12,819.72

Finding the Fourth Proportional to 40,900.29, 61,351.21 and 12,819.72

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Solution

The fourth proportional to 40,900.29, 61,351.21 and 12,819.72 is: 19,229.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,900.29 : 61,351.21 = 12,819.72 : x
  2. Step 2: Convert to fraction form
    40,900.29/61,351.21 = 12,819.72/x
  3. Step 3: Cross multiply
    40,900.29x = 61,351.21 × 12,819.72
  4. Step 4: Simplify right side
    40,900.29x = 786,505,269.76
  5. Step 5: Solve for x
    x = 786,505,269.76/40,900.29
  6. Step 6: Final answer
    x = 19,229.82

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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.