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Finding the Third Proportional to 8,642 and 11,827

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Solution

The third proportional to 8,642 and 11,827 is: 16,185.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642 : 11,827 = 11,827 : x
  2. Step 2: Convert to fraction form
    8,642/11,827 = 11,827/x
  3. Step 3: Cross multiply
    8,642x = 11,827 × 11,827
  4. Step 4: Simplify right side
    8,642x = 139,877,929
  5. Step 5: Solve for x
    x = 139,877,929/8,642
  6. Step 6: Final answer
    x = 16,185.83

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.