Home / 11,986.30-17,976.57-6,139.90

Finding the Fourth Proportional to 11,986.30, 17,976.57 and 6,139.90

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Solution

The fourth proportional to 11,986.30, 17,976.57 and 6,139.90 is: 9,208.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.30 : 17,976.57 = 6,139.90 : x
  2. Step 2: Convert to fraction form
    11,986.30/17,976.57 = 6,139.90/x
  3. Step 3: Cross multiply
    11,986.30x = 17,976.57 × 6,139.90
  4. Step 4: Simplify right side
    11,986.30x = 110,374,342.14
  5. Step 5: Solve for x
    x = 110,374,342.14/11,986.30
  6. Step 6: Final answer
    x = 9,208.37

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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.