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Finding the Third Proportional to 8,220 and 18,725

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Solution

The third proportional to 8,220 and 18,725 is: 42,655.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220 : 18,725 = 18,725 : x
  2. Step 2: Convert to fraction form
    8,220/18,725 = 18,725/x
  3. Step 3: Cross multiply
    8,220x = 18,725 × 18,725
  4. Step 4: Simplify right side
    8,220x = 350,625,625
  5. Step 5: Solve for x
    x = 350,625,625/8,220
  6. Step 6: Final answer
    x = 42,655.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.