Home / 12,540.68-18,806.25-4,105.22

Finding the Fourth Proportional to 12,540.68, 18,806.25 and 4,105.22

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Solution

The fourth proportional to 12,540.68, 18,806.25 and 4,105.22 is: 6,156.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.68 : 18,806.25 = 4,105.22 : x
  2. Step 2: Convert to fraction form
    12,540.68/18,806.25 = 4,105.22/x
  3. Step 3: Cross multiply
    12,540.68x = 18,806.25 × 4,105.22
  4. Step 4: Simplify right side
    12,540.68x = 77,203,699.59
  5. Step 5: Solve for x
    x = 77,203,699.59/12,540.68
  6. Step 6: Final answer
    x = 6,156.26

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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.