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Finding the Third Proportional to 15,693.75 and 21,951

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Solution

The third proportional to 15,693.75 and 21,951 is: 30,703.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693.75 : 21,951 = 21,951 : x
  2. Step 2: Convert to fraction form
    15,693.75/21,951 = 21,951/x
  3. Step 3: Cross multiply
    15,693.75x = 21,951 × 21,951
  4. Step 4: Simplify right side
    15,693.75x = 481,846,401
  5. Step 5: Solve for x
    x = 481,846,401/15,693.75
  6. Step 6: Final answer
    x = 30,703.08

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.