Home / 11,912.67-17,869.01-3,147.26

Finding the Fourth Proportional to 11,912.67, 17,869.01 and 3,147.26

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Solution

The fourth proportional to 11,912.67, 17,869.01 and 3,147.26 is: 4,720.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.67 : 17,869.01 = 3,147.26 : x
  2. Step 2: Convert to fraction form
    11,912.67/17,869.01 = 3,147.26/x
  3. Step 3: Cross multiply
    11,912.67x = 17,869.01 × 3,147.26
  4. Step 4: Simplify right side
    11,912.67x = 56,238,315.33
  5. Step 5: Solve for x
    x = 56,238,315.33/11,912.67
  6. Step 6: Final answer
    x = 4,720.88

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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.