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Finding the Fourth Proportional to 12,481.61, 17,231.54 and 8,508.56

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Solution

The fourth proportional to 12,481.61, 17,231.54 and 8,508.56 is: 11,746.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.61 : 17,231.54 = 8,508.56 : x
  2. Step 2: Convert to fraction form
    12,481.61/17,231.54 = 8,508.56/x
  3. Step 3: Cross multiply
    12,481.61x = 17,231.54 × 8,508.56
  4. Step 4: Simplify right side
    12,481.61x = 146,615,463.28
  5. Step 5: Solve for x
    x = 146,615,463.28/12,481.61
  6. Step 6: Final answer
    x = 11,746.52

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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.