Home / 20,372.22-30,551.94-7,891.38

Finding the Fourth Proportional to 20,372.22, 30,551.94 and 7,891.38

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Solution

The fourth proportional to 20,372.22, 30,551.94 and 7,891.38 is: 11,834.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.22 : 30,551.94 = 7,891.38 : x
  2. Step 2: Convert to fraction form
    20,372.22/30,551.94 = 7,891.38/x
  3. Step 3: Cross multiply
    20,372.22x = 30,551.94 × 7,891.38
  4. Step 4: Simplify right side
    20,372.22x = 241,096,968.28
  5. Step 5: Solve for x
    x = 241,096,968.28/20,372.22
  6. Step 6: Final answer
    x = 11,834.59

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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.