Home / 20,954.75-31,418.24-8,296.11

Finding the Fourth Proportional to 20,954.75, 31,418.24 and 8,296.11

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Solution

The fourth proportional to 20,954.75, 31,418.24 and 8,296.11 is: 12,438.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.75 : 31,418.24 = 8,296.11 : x
  2. Step 2: Convert to fraction form
    20,954.75/31,418.24 = 8,296.11/x
  3. Step 3: Cross multiply
    20,954.75x = 31,418.24 × 8,296.11
  4. Step 4: Simplify right side
    20,954.75x = 260,649,133.57
  5. Step 5: Solve for x
    x = 260,649,133.57/20,954.75
  6. Step 6: Final answer
    x = 12,438.67

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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.