Home / 20,249.46-30,389.78-13,227.57

Finding the Fourth Proportional to 20,249.46, 30,389.78 and 13,227.57

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Solution

The fourth proportional to 20,249.46, 30,389.78 and 13,227.57 is: 19,851.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,249.46 : 30,389.78 = 13,227.57 : x
  2. Step 2: Convert to fraction form
    20,249.46/30,389.78 = 13,227.57/x
  3. Step 3: Cross multiply
    20,249.46x = 30,389.78 × 13,227.57
  4. Step 4: Simplify right side
    20,249.46x = 401,982,975.30
  5. Step 5: Solve for x
    x = 401,982,975.30/20,249.46
  6. Step 6: Final answer
    x = 19,851.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.