Home / 20,958.75-31,447.24-7,809.41

Finding the Fourth Proportional to 20,958.75, 31,447.24 and 7,809.41

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Solution

The fourth proportional to 20,958.75, 31,447.24 and 7,809.41 is: 11,717.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.75 : 31,447.24 = 7,809.41 : x
  2. Step 2: Convert to fraction form
    20,958.75/31,447.24 = 7,809.41/x
  3. Step 3: Cross multiply
    20,958.75x = 31,447.24 × 7,809.41
  4. Step 4: Simplify right side
    20,958.75x = 245,584,449.62
  5. Step 5: Solve for x
    x = 245,584,449.62/20,958.75
  6. Step 6: Final answer
    x = 11,717.51

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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.