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Finding the Third Proportional to 15,385 and 20,883

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Solution

The third proportional to 15,385 and 20,883 is: 28,345.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385 : 20,883 = 20,883 : x
  2. Step 2: Convert to fraction form
    15,385/20,883 = 20,883/x
  3. Step 3: Cross multiply
    15,385x = 20,883 × 20,883
  4. Step 4: Simplify right side
    15,385x = 436,099,689
  5. Step 5: Solve for x
    x = 436,099,689/15,385
  6. Step 6: Final answer
    x = 28,345.77

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.