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Finding the Third Proportional to 15,436 and 20,584

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Solution

The third proportional to 15,436 and 20,584 is: 27,448.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436 : 20,584 = 20,584 : x
  2. Step 2: Convert to fraction form
    15,436/20,584 = 20,584/x
  3. Step 3: Cross multiply
    15,436x = 20,584 × 20,584
  4. Step 4: Simplify right side
    15,436x = 423,701,056
  5. Step 5: Solve for x
    x = 423,701,056/15,436
  6. Step 6: Final answer
    x = 27,448.89

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.