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Finding the Fourth Proportional to 12,716.73, 17,563.46 and 8,676.63

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Solution

The fourth proportional to 12,716.73, 17,563.46 and 8,676.63 is: 11,983.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,716.73 : 17,563.46 = 8,676.63 : x
  2. Step 2: Convert to fraction form
    12,716.73/17,563.46 = 8,676.63/x
  3. Step 3: Cross multiply
    12,716.73x = 17,563.46 × 8,676.63
  4. Step 4: Simplify right side
    12,716.73x = 152,391,600.56
  5. Step 5: Solve for x
    x = 152,391,600.56/12,716.73
  6. Step 6: Final answer
    x = 11,983.55

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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.