Home / 13,811.10-20,716.62-3,422.85

Finding the Fourth Proportional to 13,811.10, 20,716.62 and 3,422.85

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Solution

The fourth proportional to 13,811.10, 20,716.62 and 3,422.85 is: 5,134.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.10 : 20,716.62 = 3,422.85 : x
  2. Step 2: Convert to fraction form
    13,811.10/20,716.62 = 3,422.85/x
  3. Step 3: Cross multiply
    13,811.10x = 20,716.62 × 3,422.85
  4. Step 4: Simplify right side
    13,811.10x = 70,909,882.77
  5. Step 5: Solve for x
    x = 70,909,882.77/13,811.10
  6. Step 6: Final answer
    x = 5,134.27

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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.