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Finding the Third Proportional to 12,512 and 19,813

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Solution

The third proportional to 12,512 and 19,813 is: 31,374.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512 : 19,813 = 19,813 : x
  2. Step 2: Convert to fraction form
    12,512/19,813 = 19,813/x
  3. Step 3: Cross multiply
    12,512x = 19,813 × 19,813
  4. Step 4: Simplify right side
    12,512x = 392,554,969
  5. Step 5: Solve for x
    x = 392,554,969/12,512
  6. Step 6: Final answer
    x = 31,374.28

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.