Home / 20,908.48-31,367.66-6,868.55

Finding the Fourth Proportional to 20,908.48, 31,367.66 and 6,868.55

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Solution

The fourth proportional to 20,908.48, 31,367.66 and 6,868.55 is: 10,304.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.48 : 31,367.66 = 6,868.55 : x
  2. Step 2: Convert to fraction form
    20,908.48/31,367.66 = 6,868.55/x
  3. Step 3: Cross multiply
    20,908.48x = 31,367.66 × 6,868.55
  4. Step 4: Simplify right side
    20,908.48x = 215,450,208.73
  5. Step 5: Solve for x
    x = 215,450,208.73/20,908.48
  6. Step 6: Final answer
    x = 10,304.44

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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.