Home / 11,165.75-15,408.80-6,976.43

Finding the Fourth Proportional to 11,165.75, 15,408.80 and 6,976.43

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Solution

The fourth proportional to 11,165.75, 15,408.80 and 6,976.43 is: 9,627.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.75 : 15,408.80 = 6,976.43 : x
  2. Step 2: Convert to fraction form
    11,165.75/15,408.80 = 6,976.43/x
  3. Step 3: Cross multiply
    11,165.75x = 15,408.80 × 6,976.43
  4. Step 4: Simplify right side
    11,165.75x = 107,498,379.70
  5. Step 5: Solve for x
    x = 107,498,379.70/11,165.75
  6. Step 6: Final answer
    x = 9,627.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.