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Finding the Third Proportional to 8,312 and 18,116

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Solution

The third proportional to 8,312 and 18,116 is: 39,483.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312 : 18,116 = 18,116 : x
  2. Step 2: Convert to fraction form
    8,312/18,116 = 18,116/x
  3. Step 3: Cross multiply
    8,312x = 18,116 × 18,116
  4. Step 4: Simplify right side
    8,312x = 328,189,456
  5. Step 5: Solve for x
    x = 328,189,456/8,312
  6. Step 6: Final answer
    x = 39,483.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.