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Finding the Third Proportional to 9,128 and 19,228

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Solution

The third proportional to 9,128 and 19,228 is: 40,503.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128 : 19,228 = 19,228 : x
  2. Step 2: Convert to fraction form
    9,128/19,228 = 19,228/x
  3. Step 3: Cross multiply
    9,128x = 19,228 × 19,228
  4. Step 4: Simplify right side
    9,128x = 369,715,984
  5. Step 5: Solve for x
    x = 369,715,984/9,128
  6. Step 6: Final answer
    x = 40,503.50

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.