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Finding the Third Proportional to 13,889 and 30,370

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Solution

The third proportional to 13,889 and 30,370 is: 66,407.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889 : 30,370 = 30,370 : x
  2. Step 2: Convert to fraction form
    13,889/30,370 = 30,370/x
  3. Step 3: Cross multiply
    13,889x = 30,370 × 30,370
  4. Step 4: Simplify right side
    13,889x = 922,336,900
  5. Step 5: Solve for x
    x = 922,336,900/13,889
  6. Step 6: Final answer
    x = 66,407.73

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.