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Finding the Third Proportional to 13,716 and 15,684

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Solution

The third proportional to 13,716 and 15,684 is: 17,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716 : 15,684 = 15,684 : x
  2. Step 2: Convert to fraction form
    13,716/15,684 = 15,684/x
  3. Step 3: Cross multiply
    13,716x = 15,684 × 15,684
  4. Step 4: Simplify right side
    13,716x = 245,987,856
  5. Step 5: Solve for x
    x = 245,987,856/13,716
  6. Step 6: Final answer
    x = 17,934.37

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.