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Finding the Third Proportional to 15,820 and 33,381

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Solution

The third proportional to 15,820 and 33,381 is: 70,435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820 : 33,381 = 33,381 : x
  2. Step 2: Convert to fraction form
    15,820/33,381 = 33,381/x
  3. Step 3: Cross multiply
    15,820x = 33,381 × 33,381
  4. Step 4: Simplify right side
    15,820x = 1,114,291,161
  5. Step 5: Solve for x
    x = 1,114,291,161/15,820
  6. Step 6: Final answer
    x = 70,435.60

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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.