Home / 12,640.26-17,443.28-6,974.79

Finding the Fourth Proportional to 12,640.26, 17,443.28 and 6,974.79

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Solution

The fourth proportional to 12,640.26, 17,443.28 and 6,974.79 is: 9,625.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.26 : 17,443.28 = 6,974.79 : x
  2. Step 2: Convert to fraction form
    12,640.26/17,443.28 = 6,974.79/x
  3. Step 3: Cross multiply
    12,640.26x = 17,443.28 × 6,974.79
  4. Step 4: Simplify right side
    12,640.26x = 121,663,214.91
  5. Step 5: Solve for x
    x = 121,663,214.91/12,640.26
  6. Step 6: Final answer
    x = 9,625.06

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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.