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Finding the Third Proportional to 8,280 and 18,020

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Solution

The third proportional to 8,280 and 18,020 is: 39,217.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280 : 18,020 = 18,020 : x
  2. Step 2: Convert to fraction form
    8,280/18,020 = 18,020/x
  3. Step 3: Cross multiply
    8,280x = 18,020 × 18,020
  4. Step 4: Simplify right side
    8,280x = 324,720,400
  5. Step 5: Solve for x
    x = 324,720,400/8,280
  6. Step 6: Final answer
    x = 39,217.44

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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.