Home / 20,829.44-31,247.81-13,441.02

Finding the Fourth Proportional to 20,829.44, 31,247.81 and 13,441.02

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Solution

The fourth proportional to 20,829.44, 31,247.81 and 13,441.02 is: 20,163.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.44 : 31,247.81 = 13,441.02 : x
  2. Step 2: Convert to fraction form
    20,829.44/31,247.81 = 13,441.02/x
  3. Step 3: Cross multiply
    20,829.44x = 31,247.81 × 13,441.02
  4. Step 4: Simplify right side
    20,829.44x = 420,002,371.96
  5. Step 5: Solve for x
    x = 420,002,371.96/20,829.44
  6. Step 6: Final answer
    x = 20,163.89

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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.