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Finding the Third Proportional to 15,349.50 and 20,817

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Solution

The third proportional to 15,349.50 and 20,817 is: 28,232.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.50 : 20,817 = 20,817 : x
  2. Step 2: Convert to fraction form
    15,349.50/20,817 = 20,817/x
  3. Step 3: Cross multiply
    15,349.50x = 20,817 × 20,817
  4. Step 4: Simplify right side
    15,349.50x = 433,347,489
  5. Step 5: Solve for x
    x = 433,347,489/15,349.50
  6. Step 6: Final answer
    x = 28,232.03

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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.