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Finding the Third Proportional to 14,778 and 19,911

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Solution

The third proportional to 14,778 and 19,911 is: 26,826.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778 : 19,911 = 19,911 : x
  2. Step 2: Convert to fraction form
    14,778/19,911 = 19,911/x
  3. Step 3: Cross multiply
    14,778x = 19,911 × 19,911
  4. Step 4: Simplify right side
    14,778x = 396,447,921
  5. Step 5: Solve for x
    x = 396,447,921/14,778
  6. Step 6: Final answer
    x = 26,826.90

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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.