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Finding the Third Proportional to 13,513 and 21,587

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Solution

The third proportional to 13,513 and 21,587 is: 34,485.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513 : 21,587 = 21,587 : x
  2. Step 2: Convert to fraction form
    13,513/21,587 = 21,587/x
  3. Step 3: Cross multiply
    13,513x = 21,587 × 21,587
  4. Step 4: Simplify right side
    13,513x = 465,998,569
  5. Step 5: Solve for x
    x = 465,998,569/13,513
  6. Step 6: Final answer
    x = 34,485.20

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.