Home / 13,198.36-18,213.57-7,229.67

Finding the Fourth Proportional to 13,198.36, 18,213.57 and 7,229.67

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Solution

The fourth proportional to 13,198.36, 18,213.57 and 7,229.67 is: 9,976.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.36 : 18,213.57 = 7,229.67 : x
  2. Step 2: Convert to fraction form
    13,198.36/18,213.57 = 7,229.67/x
  3. Step 3: Cross multiply
    13,198.36x = 18,213.57 × 7,229.67
  4. Step 4: Simplify right side
    13,198.36x = 131,678,100.62
  5. Step 5: Solve for x
    x = 131,678,100.62/13,198.36
  6. Step 6: Final answer
    x = 9,976.85

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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.