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Finding the Third Proportional to 13,572 and 18,390

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Solution

The third proportional to 13,572 and 18,390 is: 24,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572 : 18,390 = 18,390 : x
  2. Step 2: Convert to fraction form
    13,572/18,390 = 18,390/x
  3. Step 3: Cross multiply
    13,572x = 18,390 × 18,390
  4. Step 4: Simplify right side
    13,572x = 338,192,100
  5. Step 5: Solve for x
    x = 338,192,100/13,572
  6. Step 6: Final answer
    x = 24,918.37

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.