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Finding the Fourth Proportional to 27,993.25, 41,990.21 and 11,980.62

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Solution

The fourth proportional to 27,993.25, 41,990.21 and 11,980.62 is: 17,971.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,993.25 : 41,990.21 = 11,980.62 : x
  2. Step 2: Convert to fraction form
    27,993.25/41,990.21 = 11,980.62/x
  3. Step 3: Cross multiply
    27,993.25x = 41,990.21 × 11,980.62
  4. Step 4: Simplify right side
    27,993.25x = 503,068,749.73
  5. Step 5: Solve for x
    x = 503,068,749.73/27,993.25
  6. Step 6: Final answer
    x = 17,971.07

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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.