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Finding the Fourth Proportional to 11,958.41, 17,900.69 and 7,789.44

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Solution

The fourth proportional to 11,958.41, 17,900.69 and 7,789.44 is: 11,660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.41 : 17,900.69 = 7,789.44 : x
  2. Step 2: Convert to fraction form
    11,958.41/17,900.69 = 7,789.44/x
  3. Step 3: Cross multiply
    11,958.41x = 17,900.69 × 7,789.44
  4. Step 4: Simplify right side
    11,958.41x = 139,436,222.26
  5. Step 5: Solve for x
    x = 139,436,222.26/11,958.41
  6. Step 6: Final answer
    x = 11,660.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.