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Finding the Third Proportional to 9,911 and 13,590.75

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Solution

The third proportional to 9,911 and 13,590.75 is: 18,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911 : 13,590.75 = 13,590.75 : x
  2. Step 2: Convert to fraction form
    9,911/13,590.75 = 13,590.75/x
  3. Step 3: Cross multiply
    9,911x = 13,590.75 × 13,590.75
  4. Step 4: Simplify right side
    9,911x = 184,708,485.56
  5. Step 5: Solve for x
    x = 184,708,485.56/9,911
  6. Step 6: Final answer
    x = 18,636.72

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.