Home / 7,981.14-11,971.73-7,969.61

Finding the Fourth Proportional to 7,981.14, 11,971.73 and 7,969.61

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Solution

The fourth proportional to 7,981.14, 11,971.73 and 7,969.61 is: 11,954.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.14 : 11,971.73 = 7,969.61 : x
  2. Step 2: Convert to fraction form
    7,981.14/11,971.73 = 7,969.61/x
  3. Step 3: Cross multiply
    7,981.14x = 11,971.73 × 7,969.61
  4. Step 4: Simplify right side
    7,981.14x = 95,410,003.75
  5. Step 5: Solve for x
    x = 95,410,003.75/7,981.14
  6. Step 6: Final answer
    x = 11,954.43

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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.