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Finding the Third Proportional to 19,180 and 30,138

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Solution

The third proportional to 19,180 and 30,138 is: 47,356.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,180 : 30,138 = 30,138 : x
  2. Step 2: Convert to fraction form
    19,180/30,138 = 30,138/x
  3. Step 3: Cross multiply
    19,180x = 30,138 × 30,138
  4. Step 4: Simplify right side
    19,180x = 908,299,044
  5. Step 5: Solve for x
    x = 908,299,044/19,180
  6. Step 6: Final answer
    x = 47,356.57

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.