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Finding the Third Proportional to 15,606 and 18,018

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Solution

The third proportional to 15,606 and 18,018 is: 20,802.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,606 : 18,018 = 18,018 : x
  2. Step 2: Convert to fraction form
    15,606/18,018 = 18,018/x
  3. Step 3: Cross multiply
    15,606x = 18,018 × 18,018
  4. Step 4: Simplify right side
    15,606x = 324,648,324
  5. Step 5: Solve for x
    x = 324,648,324/15,606
  6. Step 6: Final answer
    x = 20,802.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.