Home / 20,084.34-27,716.31-11,131.75

Finding the Fourth Proportional to 20,084.34, 27,716.31 and 11,131.75

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Solution

The fourth proportional to 20,084.34, 27,716.31 and 11,131.75 is: 15,361.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,084.34 : 27,716.31 = 11,131.75 : x
  2. Step 2: Convert to fraction form
    20,084.34/27,716.31 = 11,131.75/x
  3. Step 3: Cross multiply
    20,084.34x = 27,716.31 × 11,131.75
  4. Step 4: Simplify right side
    20,084.34x = 308,531,033.84
  5. Step 5: Solve for x
    x = 308,531,033.84/20,084.34
  6. Step 6: Final answer
    x = 15,361.77

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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.