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Finding the Third Proportional to 8,679 and 18,929

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Solution

The third proportional to 8,679 and 18,929 is: 41,284.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679 : 18,929 = 18,929 : x
  2. Step 2: Convert to fraction form
    8,679/18,929 = 18,929/x
  3. Step 3: Cross multiply
    8,679x = 18,929 × 18,929
  4. Step 4: Simplify right side
    8,679x = 358,307,041
  5. Step 5: Solve for x
    x = 358,307,041/8,679
  6. Step 6: Final answer
    x = 41,284.37

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.