Home / 20,791.56-28,691.94-11,360.04

Finding the Fourth Proportional to 20,791.56, 28,691.94 and 11,360.04

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Solution

The fourth proportional to 20,791.56, 28,691.94 and 11,360.04 is: 15,676.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.56 : 28,691.94 = 11,360.04 : x
  2. Step 2: Convert to fraction form
    20,791.56/28,691.94 = 11,360.04/x
  3. Step 3: Cross multiply
    20,791.56x = 28,691.94 × 11,360.04
  4. Step 4: Simplify right side
    20,791.56x = 325,941,586.08
  5. Step 5: Solve for x
    x = 325,941,586.08/20,791.56
  6. Step 6: Final answer
    x = 15,676.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.