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Finding the Third Proportional to 8,559 and 13,581

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Solution

The third proportional to 8,559 and 13,581 is: 21,549.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559 : 13,581 = 13,581 : x
  2. Step 2: Convert to fraction form
    8,559/13,581 = 13,581/x
  3. Step 3: Cross multiply
    8,559x = 13,581 × 13,581
  4. Step 4: Simplify right side
    8,559x = 184,443,561
  5. Step 5: Solve for x
    x = 184,443,561/8,559
  6. Step 6: Final answer
    x = 21,549.66

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.