Home / 12,738.08-17,578.68-7,072.94

Finding the Fourth Proportional to 12,738.08, 17,578.68 and 7,072.94

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Solution

The fourth proportional to 12,738.08, 17,578.68 and 7,072.94 is: 9,760.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.08 : 17,578.68 = 7,072.94 : x
  2. Step 2: Convert to fraction form
    12,738.08/17,578.68 = 7,072.94/x
  3. Step 3: Cross multiply
    12,738.08x = 17,578.68 × 7,072.94
  4. Step 4: Simplify right side
    12,738.08x = 124,332,948.92
  5. Step 5: Solve for x
    x = 124,332,948.92/12,738.08
  6. Step 6: Final answer
    x = 9,760.73

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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.