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Finding the Fourth Proportional to 12,481.84, 17,231.97 and 8,659

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Solution

The fourth proportional to 12,481.84, 17,231.97 and 8,659 is: 11,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.84 : 17,231.97 = 8,659 : x
  2. Step 2: Convert to fraction form
    12,481.84/17,231.97 = 8,659/x
  3. Step 3: Cross multiply
    12,481.84x = 17,231.97 × 8,659
  4. Step 4: Simplify right side
    12,481.84x = 149,211,628.23
  5. Step 5: Solve for x
    x = 149,211,628.23/12,481.84
  6. Step 6: Final answer
    x = 11,954.30

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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.