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Finding the Third Proportional to 13,824 and 15,408

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Solution

The third proportional to 13,824 and 15,408 is: 17,173.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824 : 15,408 = 15,408 : x
  2. Step 2: Convert to fraction form
    13,824/15,408 = 15,408/x
  3. Step 3: Cross multiply
    13,824x = 15,408 × 15,408
  4. Step 4: Simplify right side
    13,824x = 237,406,464
  5. Step 5: Solve for x
    x = 237,406,464/13,824
  6. Step 6: Final answer
    x = 17,173.50

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.