Home / 13,424.62-18,525.94-8,119.42

Finding the Fourth Proportional to 13,424.62, 18,525.94 and 8,119.42

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Solution

The fourth proportional to 13,424.62, 18,525.94 and 8,119.42 is: 11,204.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.62 : 18,525.94 = 8,119.42 : x
  2. Step 2: Convert to fraction form
    13,424.62/18,525.94 = 8,119.42/x
  3. Step 3: Cross multiply
    13,424.62x = 18,525.94 × 8,119.42
  4. Step 4: Simplify right side
    13,424.62x = 150,419,887.75
  5. Step 5: Solve for x
    x = 150,419,887.75/13,424.62
  6. Step 6: Final answer
    x = 11,204.78

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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.