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Finding the Third Proportional to 13,700 and 19,390

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Solution

The third proportional to 13,700 and 19,390 is: 27,443.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700 : 19,390 = 19,390 : x
  2. Step 2: Convert to fraction form
    13,700/19,390 = 19,390/x
  3. Step 3: Cross multiply
    13,700x = 19,390 × 19,390
  4. Step 4: Simplify right side
    13,700x = 375,972,100
  5. Step 5: Solve for x
    x = 375,972,100/13,700
  6. Step 6: Final answer
    x = 27,443.22

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.