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Finding the Third Proportional to 13,969 and 19,912

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Solution

The third proportional to 13,969 and 19,912 is: 28,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969 : 19,912 = 19,912 : x
  2. Step 2: Convert to fraction form
    13,969/19,912 = 19,912/x
  3. Step 3: Cross multiply
    13,969x = 19,912 × 19,912
  4. Step 4: Simplify right side
    13,969x = 396,487,744
  5. Step 5: Solve for x
    x = 396,487,744/13,969
  6. Step 6: Final answer
    x = 28,383.40

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.