Home / 20,747.25-31,121.42-6,896.25

Finding the Fourth Proportional to 20,747.25, 31,121.42 and 6,896.25

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Solution

The fourth proportional to 20,747.25, 31,121.42 and 6,896.25 is: 10,344.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.25 : 31,121.42 = 6,896.25 : x
  2. Step 2: Convert to fraction form
    20,747.25/31,121.42 = 6,896.25/x
  3. Step 3: Cross multiply
    20,747.25x = 31,121.42 × 6,896.25
  4. Step 4: Simplify right side
    20,747.25x = 214,621,058.19
  5. Step 5: Solve for x
    x = 214,621,058.19/20,747.25
  6. Step 6: Final answer
    x = 10,344.55

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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.