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Finding the Third Proportional to 9,912.50 and 13,455.75

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Solution

The third proportional to 9,912.50 and 13,455.75 is: 18,265.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.50 : 13,455.75 = 13,455.75 : x
  2. Step 2: Convert to fraction form
    9,912.50/13,455.75 = 13,455.75/x
  3. Step 3: Cross multiply
    9,912.50x = 13,455.75 × 13,455.75
  4. Step 4: Simplify right side
    9,912.50x = 181,057,208.06
  5. Step 5: Solve for x
    x = 181,057,208.06/9,912.50
  6. Step 6: Final answer
    x = 18,265.54

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.