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Finding the Third Proportional to 21,289 and 32,228

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Solution

The third proportional to 21,289 and 32,228 is: 48,787.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289 : 32,228 = 32,228 : x
  2. Step 2: Convert to fraction form
    21,289/32,228 = 32,228/x
  3. Step 3: Cross multiply
    21,289x = 32,228 × 32,228
  4. Step 4: Simplify right side
    21,289x = 1,038,643,984
  5. Step 5: Solve for x
    x = 1,038,643,984/21,289
  6. Step 6: Final answer
    x = 48,787.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.