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Finding the Third Proportional to 13,917 and 21,391.50

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Solution

The third proportional to 13,917 and 21,391.50 is: 32,880.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917 : 21,391.50 = 21,391.50 : x
  2. Step 2: Convert to fraction form
    13,917/21,391.50 = 21,391.50/x
  3. Step 3: Cross multiply
    13,917x = 21,391.50 × 21,391.50
  4. Step 4: Simplify right side
    13,917x = 457,596,272.25
  5. Step 5: Solve for x
    x = 457,596,272.25/13,917
  6. Step 6: Final answer
    x = 32,880.38

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.