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Finding the Third Proportional to 15,114.75 and 21,645

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Solution

The third proportional to 15,114.75 and 21,645 is: 30,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,114.75 : 21,645 = 21,645 : x
  2. Step 2: Convert to fraction form
    15,114.75/21,645 = 21,645/x
  3. Step 3: Cross multiply
    15,114.75x = 21,645 × 21,645
  4. Step 4: Simplify right side
    15,114.75x = 468,506,025
  5. Step 5: Solve for x
    x = 468,506,025/15,114.75
  6. Step 6: Final answer
    x = 30,996.61

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.