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Finding the Third Proportional to 7,371 and 12,165.75

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Solution

The third proportional to 7,371 and 12,165.75 is: 20,079.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,371 : 12,165.75 = 12,165.75 : x
  2. Step 2: Convert to fraction form
    7,371/12,165.75 = 12,165.75/x
  3. Step 3: Cross multiply
    7,371x = 12,165.75 × 12,165.75
  4. Step 4: Simplify right side
    7,371x = 148,005,473.06
  5. Step 5: Solve for x
    x = 148,005,473.06/7,371
  6. Step 6: Final answer
    x = 20,079.43

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.