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Finding the Third Proportional to 15,575 and 20,983

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Solution

The third proportional to 15,575 and 20,983 is: 28,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,575 : 20,983 = 20,983 : x
  2. Step 2: Convert to fraction form
    15,575/20,983 = 20,983/x
  3. Step 3: Cross multiply
    15,575x = 20,983 × 20,983
  4. Step 4: Simplify right side
    15,575x = 440,286,289
  5. Step 5: Solve for x
    x = 440,286,289/15,575
  6. Step 6: Final answer
    x = 28,268.78

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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.