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Finding the Third Proportional to 12,818 and 18,929

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Solution

The third proportional to 12,818 and 18,929 is: 27,953.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818 : 18,929 = 18,929 : x
  2. Step 2: Convert to fraction form
    12,818/18,929 = 18,929/x
  3. Step 3: Cross multiply
    12,818x = 18,929 × 18,929
  4. Step 4: Simplify right side
    12,818x = 358,307,041
  5. Step 5: Solve for x
    x = 358,307,041/12,818
  6. Step 6: Final answer
    x = 27,953.43

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.