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Finding the Third Proportional to 12,756 and 19,318

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Solution

The third proportional to 12,756 and 19,318 is: 29,255.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756 : 19,318 = 19,318 : x
  2. Step 2: Convert to fraction form
    12,756/19,318 = 19,318/x
  3. Step 3: Cross multiply
    12,756x = 19,318 × 19,318
  4. Step 4: Simplify right side
    12,756x = 373,185,124
  5. Step 5: Solve for x
    x = 373,185,124/12,756
  6. Step 6: Final answer
    x = 29,255.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.