Home / 12,545.77-18,819.56-3,781.37

Finding the Fourth Proportional to 12,545.77, 18,819.56 and 3,781.37

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Solution

The fourth proportional to 12,545.77, 18,819.56 and 3,781.37 is: 5,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.77 : 18,819.56 = 3,781.37 : x
  2. Step 2: Convert to fraction form
    12,545.77/18,819.56 = 3,781.37/x
  3. Step 3: Cross multiply
    12,545.77x = 18,819.56 × 3,781.37
  4. Step 4: Simplify right side
    12,545.77x = 71,163,634.95
  5. Step 5: Solve for x
    x = 71,163,634.95/12,545.77
  6. Step 6: Final answer
    x = 5,672.32

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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.