Home / 13,279.88-18,333.60-7,976

Finding the Fourth Proportional to 13,279.88, 18,333.60 and 7,976

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Solution

The fourth proportional to 13,279.88, 18,333.60 and 7,976 is: 11,011.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.88 : 18,333.60 = 7,976 : x
  2. Step 2: Convert to fraction form
    13,279.88/18,333.60 = 7,976/x
  3. Step 3: Cross multiply
    13,279.88x = 18,333.60 × 7,976
  4. Step 4: Simplify right side
    13,279.88x = 146,228,793.60
  5. Step 5: Solve for x
    x = 146,228,793.60/13,279.88
  6. Step 6: Final answer
    x = 11,011.30

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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.