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Finding the Third Proportional to 10,155 and 16,311

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Solution

The third proportional to 10,155 and 16,311 is: 26,198.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155 : 16,311 = 16,311 : x
  2. Step 2: Convert to fraction form
    10,155/16,311 = 16,311/x
  3. Step 3: Cross multiply
    10,155x = 16,311 × 16,311
  4. Step 4: Simplify right side
    10,155x = 266,048,721
  5. Step 5: Solve for x
    x = 266,048,721/10,155
  6. Step 6: Final answer
    x = 26,198.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.