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Finding the Fourth Proportional to 9,994.92, 13,791.78 and 5,518.32

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Solution

The fourth proportional to 9,994.92, 13,791.78 and 5,518.32 is: 7,614.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,994.92 : 13,791.78 = 5,518.32 : x
  2. Step 2: Convert to fraction form
    9,994.92/13,791.78 = 5,518.32/x
  3. Step 3: Cross multiply
    9,994.92x = 13,791.78 × 5,518.32
  4. Step 4: Simplify right side
    9,994.92x = 76,107,455.41
  5. Step 5: Solve for x
    x = 76,107,455.41/9,994.92
  6. Step 6: Final answer
    x = 7,614.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.