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Finding the Third Proportional to 11,778 and 15,567

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Solution

The third proportional to 11,778 and 15,567 is: 20,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,778 : 15,567 = 15,567 : x
  2. Step 2: Convert to fraction form
    11,778/15,567 = 15,567/x
  3. Step 3: Cross multiply
    11,778x = 15,567 × 15,567
  4. Step 4: Simplify right side
    11,778x = 242,331,489
  5. Step 5: Solve for x
    x = 242,331,489/11,778
  6. Step 6: Final answer
    x = 20,574.93

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.