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Finding the Fourth Proportional to 12,640.22, 17,444.49 and 6,976.09

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Solution

The fourth proportional to 12,640.22, 17,444.49 and 6,976.09 is: 9,627.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640.22 : 17,444.49 = 6,976.09 : x
  2. Step 2: Convert to fraction form
    12,640.22/17,444.49 = 6,976.09/x
  3. Step 3: Cross multiply
    12,640.22x = 17,444.49 × 6,976.09
  4. Step 4: Simplify right side
    12,640.22x = 121,694,332.24
  5. Step 5: Solve for x
    x = 121,694,332.24/12,640.22
  6. Step 6: Final answer
    x = 9,627.55

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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.