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Finding the Third Proportional to 13,912.50 and 21,574

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Solution

The third proportional to 13,912.50 and 21,574 is: 33,454.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.50 : 21,574 = 21,574 : x
  2. Step 2: Convert to fraction form
    13,912.50/21,574 = 21,574/x
  3. Step 3: Cross multiply
    13,912.50x = 21,574 × 21,574
  4. Step 4: Simplify right side
    13,912.50x = 465,437,476
  5. Step 5: Solve for x
    x = 465,437,476/13,912.50
  6. Step 6: Final answer
    x = 33,454.63

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.