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Finding the Fourth Proportional to 12,168.71, 16,792.77 and 6,863.49

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Solution

The fourth proportional to 12,168.71, 16,792.77 and 6,863.49 is: 9,471.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.71 : 16,792.77 = 6,863.49 : x
  2. Step 2: Convert to fraction form
    12,168.71/16,792.77 = 6,863.49/x
  3. Step 3: Cross multiply
    12,168.71x = 16,792.77 × 6,863.49
  4. Step 4: Simplify right side
    12,168.71x = 115,257,008.97
  5. Step 5: Solve for x
    x = 115,257,008.97/12,168.71
  6. Step 6: Final answer
    x = 9,471.59

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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.