Home / 13,197.92-18,213.21-7,229.61

Finding the Fourth Proportional to 13,197.92, 18,213.21 and 7,229.61

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Solution

The fourth proportional to 13,197.92, 18,213.21 and 7,229.61 is: 9,976.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.92 : 18,213.21 = 7,229.61 : x
  2. Step 2: Convert to fraction form
    13,197.92/18,213.21 = 7,229.61/x
  3. Step 3: Cross multiply
    13,197.92x = 18,213.21 × 7,229.61
  4. Step 4: Simplify right side
    13,197.92x = 131,674,405.15
  5. Step 5: Solve for x
    x = 131,674,405.15/13,197.92
  6. Step 6: Final answer
    x = 9,976.91

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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.