Home / 13,217.82-18,240.78-7,249.44

Finding the Fourth Proportional to 13,217.82, 18,240.78 and 7,249.44

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Solution

The fourth proportional to 13,217.82, 18,240.78 and 7,249.44 is: 10,004.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,217.82 : 18,240.78 = 7,249.44 : x
  2. Step 2: Convert to fraction form
    13,217.82/18,240.78 = 7,249.44/x
  3. Step 3: Cross multiply
    13,217.82x = 18,240.78 × 7,249.44
  4. Step 4: Simplify right side
    13,217.82x = 132,235,440.16
  5. Step 5: Solve for x
    x = 132,235,440.16/13,217.82
  6. Step 6: Final answer
    x = 10,004.33

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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.