Home / 13,213.68-18,234.87-7,245.23

Finding the Fourth Proportional to 13,213.68, 18,234.87 and 7,245.23

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Solution

The fourth proportional to 13,213.68, 18,234.87 and 7,245.23 is: 9,998.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.68 : 18,234.87 = 7,245.23 : x
  2. Step 2: Convert to fraction form
    13,213.68/18,234.87 = 7,245.23/x
  3. Step 3: Cross multiply
    13,213.68x = 18,234.87 × 7,245.23
  4. Step 4: Simplify right side
    13,213.68x = 132,115,736.00
  5. Step 5: Solve for x
    x = 132,115,736.00/13,213.68
  6. Step 6: Final answer
    x = 9,998.41

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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.