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Finding the Third Proportional to 20,220 and 31,815

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Solution

The third proportional to 20,220 and 31,815 is: 50,059.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220 : 31,815 = 31,815 : x
  2. Step 2: Convert to fraction form
    20,220/31,815 = 31,815/x
  3. Step 3: Cross multiply
    20,220x = 31,815 × 31,815
  4. Step 4: Simplify right side
    20,220x = 1,012,194,225
  5. Step 5: Solve for x
    x = 1,012,194,225/20,220
  6. Step 6: Final answer
    x = 50,059.06

Related Problems

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.