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Finding the Third Proportional to 13,616 and 16,784

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Solution

The third proportional to 13,616 and 16,784 is: 20,689.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616 : 16,784 = 16,784 : x
  2. Step 2: Convert to fraction form
    13,616/16,784 = 16,784/x
  3. Step 3: Cross multiply
    13,616x = 16,784 × 16,784
  4. Step 4: Simplify right side
    13,616x = 281,702,656
  5. Step 5: Solve for x
    x = 281,702,656/13,616
  6. Step 6: Final answer
    x = 20,689.09

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Why These Related Problems?

These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.