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Finding the Third Proportional to 15,433.50 and 20,916

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Solution

The third proportional to 15,433.50 and 20,916 is: 28,346.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,433.50 : 20,916 = 20,916 : x
  2. Step 2: Convert to fraction form
    15,433.50/20,916 = 20,916/x
  3. Step 3: Cross multiply
    15,433.50x = 20,916 × 20,916
  4. Step 4: Simplify right side
    15,433.50x = 437,479,056
  5. Step 5: Solve for x
    x = 437,479,056/15,433.50
  6. Step 6: Final answer
    x = 28,346.07

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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.