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Finding the Fourth Proportional to 11,992.50, 17,991.42 and 3,673.68

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Solution

The fourth proportional to 11,992.50, 17,991.42 and 3,673.68 is: 5,511.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,992.50 : 17,991.42 = 3,673.68 : x
  2. Step 2: Convert to fraction form
    11,992.50/17,991.42 = 3,673.68/x
  3. Step 3: Cross multiply
    11,992.50x = 17,991.42 × 3,673.68
  4. Step 4: Simplify right side
    11,992.50x = 66,094,719.83
  5. Step 5: Solve for x
    x = 66,094,719.83/11,992.50
  6. Step 6: Final answer
    x = 5,511.34

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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.