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Finding the Third Proportional to 17,430 and 19,806

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Solution

The third proportional to 17,430 and 19,806 is: 22,505.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,430 : 19,806 = 19,806 : x
  2. Step 2: Convert to fraction form
    17,430/19,806 = 19,806/x
  3. Step 3: Cross multiply
    17,430x = 19,806 × 19,806
  4. Step 4: Simplify right side
    17,430x = 392,277,636
  5. Step 5: Solve for x
    x = 392,277,636/17,430
  6. Step 6: Final answer
    x = 22,505.89

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.