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Finding the Third Proportional to 7,215 and 11,414

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Solution

The third proportional to 7,215 and 11,414 is: 18,056.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215 : 11,414 = 11,414 : x
  2. Step 2: Convert to fraction form
    7,215/11,414 = 11,414/x
  3. Step 3: Cross multiply
    7,215x = 11,414 × 11,414
  4. Step 4: Simplify right side
    7,215x = 130,279,396
  5. Step 5: Solve for x
    x = 130,279,396/7,215
  6. Step 6: Final answer
    x = 18,056.74

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.