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Finding the Third Proportional to 15,380 and 20,526

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Solution

The third proportional to 15,380 and 20,526 is: 27,393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380 : 20,526 = 20,526 : x
  2. Step 2: Convert to fraction form
    15,380/20,526 = 20,526/x
  3. Step 3: Cross multiply
    15,380x = 20,526 × 20,526
  4. Step 4: Simplify right side
    15,380x = 421,316,676
  5. Step 5: Solve for x
    x = 421,316,676/15,380
  6. Step 6: Final answer
    x = 27,393.80

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.