Home / 13,571.11-20,361.79-5,251.62

Finding the Fourth Proportional to 13,571.11, 20,361.79 and 5,251.62

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Solution

The fourth proportional to 13,571.11, 20,361.79 and 5,251.62 is: 7,879.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571.11 : 20,361.79 = 5,251.62 : x
  2. Step 2: Convert to fraction form
    13,571.11/20,361.79 = 5,251.62/x
  3. Step 3: Cross multiply
    13,571.11x = 20,361.79 × 5,251.62
  4. Step 4: Simplify right side
    13,571.11x = 106,932,383.60
  5. Step 5: Solve for x
    x = 106,932,383.60/13,571.11
  6. Step 6: Final answer
    x = 7,879.41

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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.