Home / 13,197.75-18,213.20-7,229.37

Finding the Fourth Proportional to 13,197.75, 18,213.20 and 7,229.37

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Solution

The fourth proportional to 13,197.75, 18,213.20 and 7,229.37 is: 9,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.75 : 18,213.20 = 7,229.37 : x
  2. Step 2: Convert to fraction form
    13,197.75/18,213.20 = 7,229.37/x
  3. Step 3: Cross multiply
    13,197.75x = 18,213.20 × 7,229.37
  4. Step 4: Simplify right side
    13,197.75x = 131,669,961.68
  5. Step 5: Solve for x
    x = 131,669,961.68/13,197.75
  6. Step 6: Final answer
    x = 9,976.70

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1.5x scale

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.