Home / 13,815-20,726.33-5,500.85

Finding the Fourth Proportional to 13,815, 20,726.33 and 5,500.85

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Solution

The fourth proportional to 13,815, 20,726.33 and 5,500.85 is: 8,252.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815 : 20,726.33 = 5,500.85 : x
  2. Step 2: Convert to fraction form
    13,815/20,726.33 = 5,500.85/x
  3. Step 3: Cross multiply
    13,815x = 20,726.33 × 5,500.85
  4. Step 4: Simplify right side
    13,815x = 114,012,301.24
  5. Step 5: Solve for x
    x = 114,012,301.24/13,815
  6. Step 6: Final answer
    x = 8,252.79

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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.