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Finding the Third Proportional to 18,991 and 28,333

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Solution

The third proportional to 18,991 and 28,333 is: 42,270.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991 : 28,333 = 28,333 : x
  2. Step 2: Convert to fraction form
    18,991/28,333 = 28,333/x
  3. Step 3: Cross multiply
    18,991x = 28,333 × 28,333
  4. Step 4: Simplify right side
    18,991x = 802,758,889
  5. Step 5: Solve for x
    x = 802,758,889/18,991
  6. Step 6: Final answer
    x = 42,270.49

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.