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Finding the Third Proportional to 9,107.50 and 19,999

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Solution

The third proportional to 9,107.50 and 19,999 is: 43,915.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.50 : 19,999 = 19,999 : x
  2. Step 2: Convert to fraction form
    9,107.50/19,999 = 19,999/x
  3. Step 3: Cross multiply
    9,107.50x = 19,999 × 19,999
  4. Step 4: Simplify right side
    9,107.50x = 399,960,001
  5. Step 5: Solve for x
    x = 399,960,001/9,107.50
  6. Step 6: Final answer
    x = 43,915.45

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.