Home / 20,791.14-31,185.90-6,750.60

Finding the Fourth Proportional to 20,791.14, 31,185.90 and 6,750.60

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Solution

The fourth proportional to 20,791.14, 31,185.90 and 6,750.60 is: 10,125.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.14 : 31,185.90 = 6,750.60 : x
  2. Step 2: Convert to fraction form
    20,791.14/31,185.90 = 6,750.60/x
  3. Step 3: Cross multiply
    20,791.14x = 31,185.90 × 6,750.60
  4. Step 4: Simplify right side
    20,791.14x = 210,523,536.54
  5. Step 5: Solve for x
    x = 210,523,536.54/20,791.14
  6. Step 6: Final answer
    x = 10,125.64

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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.