Home / 22,147.78-30,571.34-13,198.09

Finding the Fourth Proportional to 22,147.78, 30,571.34 and 13,198.09

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Solution

The fourth proportional to 22,147.78, 30,571.34 and 13,198.09 is: 18,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,147.78 : 30,571.34 = 13,198.09 : x
  2. Step 2: Convert to fraction form
    22,147.78/30,571.34 = 13,198.09/x
  3. Step 3: Cross multiply
    22,147.78x = 30,571.34 × 13,198.09
  4. Step 4: Simplify right side
    22,147.78x = 403,483,329.74
  5. Step 5: Solve for x
    x = 403,483,329.74/22,147.78
  6. Step 6: Final answer
    x = 18,217.78

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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.