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Finding the Third Proportional to 9,520 and 20,720

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Solution

The third proportional to 9,520 and 20,720 is: 45,096.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520 : 20,720 = 20,720 : x
  2. Step 2: Convert to fraction form
    9,520/20,720 = 20,720/x
  3. Step 3: Cross multiply
    9,520x = 20,720 × 20,720
  4. Step 4: Simplify right side
    9,520x = 429,318,400
  5. Step 5: Solve for x
    x = 429,318,400/9,520
  6. Step 6: Final answer
    x = 45,096.47

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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.