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Finding the Third Proportional to 8,364 and 12,768

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Solution

The third proportional to 8,364 and 12,768 is: 19,490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364 : 12,768 = 12,768 : x
  2. Step 2: Convert to fraction form
    8,364/12,768 = 12,768/x
  3. Step 3: Cross multiply
    8,364x = 12,768 × 12,768
  4. Step 4: Simplify right side
    8,364x = 163,021,824
  5. Step 5: Solve for x
    x = 163,021,824/8,364
  6. Step 6: Final answer
    x = 19,490.89

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.