Home / 20,912.59-31,375.04-11,058.79

Finding the Fourth Proportional to 20,912.59, 31,375.04 and 11,058.79

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Solution

The fourth proportional to 20,912.59, 31,375.04 and 11,058.79 is: 16,591.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912.59 : 31,375.04 = 11,058.79 : x
  2. Step 2: Convert to fraction form
    20,912.59/31,375.04 = 11,058.79/x
  3. Step 3: Cross multiply
    20,912.59x = 31,375.04 × 11,058.79
  4. Step 4: Simplify right side
    20,912.59x = 346,969,978.60
  5. Step 5: Solve for x
    x = 346,969,978.60/20,912.59
  6. Step 6: Final answer
    x = 16,591.44

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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.