Home / 20,791.45-31,191.29-6,748.87

Finding the Fourth Proportional to 20,791.45, 31,191.29 and 6,748.87

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Solution

The fourth proportional to 20,791.45, 31,191.29 and 6,748.87 is: 10,124.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.45 : 31,191.29 = 6,748.87 : x
  2. Step 2: Convert to fraction form
    20,791.45/31,191.29 = 6,748.87/x
  3. Step 3: Cross multiply
    20,791.45x = 31,191.29 × 6,748.87
  4. Step 4: Simplify right side
    20,791.45x = 210,505,961.34
  5. Step 5: Solve for x
    x = 210,505,961.34/20,791.45
  6. Step 6: Final answer
    x = 10,124.64

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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.