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Finding the Fourth Proportional to 12,612.96, 17,405.64 and 8,633.97

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Solution

The fourth proportional to 12,612.96, 17,405.64 and 8,633.97 is: 11,914.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.96 : 17,405.64 = 8,633.97 : x
  2. Step 2: Convert to fraction form
    12,612.96/17,405.64 = 8,633.97/x
  3. Step 3: Cross multiply
    12,612.96x = 17,405.64 × 8,633.97
  4. Step 4: Simplify right side
    12,612.96x = 150,279,773.59
  5. Step 5: Solve for x
    x = 150,279,773.59/12,612.96
  6. Step 6: Final answer
    x = 11,914.71

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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.