Home / 20,627.22-30,891.99-13,103.88

Finding the Fourth Proportional to 20,627.22, 30,891.99 and 13,103.88

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Solution

The fourth proportional to 20,627.22, 30,891.99 and 13,103.88 is: 19,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.22 : 30,891.99 = 13,103.88 : x
  2. Step 2: Convert to fraction form
    20,627.22/30,891.99 = 13,103.88/x
  3. Step 3: Cross multiply
    20,627.22x = 30,891.99 × 13,103.88
  4. Step 4: Simplify right side
    20,627.22x = 404,804,929.92
  5. Step 5: Solve for x
    x = 404,804,929.92/20,627.22
  6. Step 6: Final answer
    x = 19,624.79

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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.