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Finding the Third Proportional to 15,879 and 30,318

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Solution

The third proportional to 15,879 and 30,318 is: 57,886.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,879 : 30,318 = 30,318 : x
  2. Step 2: Convert to fraction form
    15,879/30,318 = 30,318/x
  3. Step 3: Cross multiply
    15,879x = 30,318 × 30,318
  4. Step 4: Simplify right side
    15,879x = 919,181,124
  5. Step 5: Solve for x
    x = 919,181,124/15,879
  6. Step 6: Final answer
    x = 57,886.59

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.