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Finding the Third Proportional to 11,851 and 15,902.50

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Solution

The third proportional to 11,851 and 15,902.50 is: 21,339.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,851 : 15,902.50 = 15,902.50 : x
  2. Step 2: Convert to fraction form
    11,851/15,902.50 = 15,902.50/x
  3. Step 3: Cross multiply
    11,851x = 15,902.50 × 15,902.50
  4. Step 4: Simplify right side
    11,851x = 252,889,506.25
  5. Step 5: Solve for x
    x = 252,889,506.25/11,851
  6. Step 6: Final answer
    x = 21,339.09

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.