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Finding the Third Proportional to 19,121 and 28,700

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Solution

The third proportional to 19,121 and 28,700 is: 43,077.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121 : 28,700 = 28,700 : x
  2. Step 2: Convert to fraction form
    19,121/28,700 = 28,700/x
  3. Step 3: Cross multiply
    19,121x = 28,700 × 28,700
  4. Step 4: Simplify right side
    19,121x = 823,690,000
  5. Step 5: Solve for x
    x = 823,690,000/19,121
  6. Step 6: Final answer
    x = 43,077.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.