Home / 20,084.10-27,715.68-11,131.60

Finding the Fourth Proportional to 20,084.10, 27,715.68 and 11,131.60

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Solution

The fourth proportional to 20,084.10, 27,715.68 and 11,131.60 is: 15,361.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,084.10 : 27,715.68 = 11,131.60 : x
  2. Step 2: Convert to fraction form
    20,084.10/27,715.68 = 11,131.60/x
  3. Step 3: Cross multiply
    20,084.10x = 27,715.68 × 11,131.60
  4. Step 4: Simplify right side
    20,084.10x = 308,519,863.49
  5. Step 5: Solve for x
    x = 308,519,863.49/20,084.10
  6. Step 6: Final answer
    x = 15,361.40

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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.