Home / 13,213.34-18,234.36-7,245.08

Finding the Fourth Proportional to 13,213.34, 18,234.36 and 7,245.08

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Solution

The fourth proportional to 13,213.34, 18,234.36 and 7,245.08 is: 9,998.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.34 : 18,234.36 = 7,245.08 : x
  2. Step 2: Convert to fraction form
    13,213.34/18,234.36 = 7,245.08/x
  3. Step 3: Cross multiply
    13,213.34x = 18,234.36 × 7,245.08
  4. Step 4: Simplify right side
    13,213.34x = 132,109,396.95
  5. Step 5: Solve for x
    x = 132,109,396.95/13,213.34
  6. Step 6: Final answer
    x = 9,998.18

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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.