Home / 20,083.53-27,715.32-11,131.41

Finding the Fourth Proportional to 20,083.53, 27,715.32 and 11,131.41

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Solution

The fourth proportional to 20,083.53, 27,715.32 and 11,131.41 is: 15,361.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.53 : 27,715.32 = 11,131.41 : x
  2. Step 2: Convert to fraction form
    20,083.53/27,715.32 = 11,131.41/x
  3. Step 3: Cross multiply
    20,083.53x = 27,715.32 × 11,131.41
  4. Step 4: Simplify right side
    20,083.53x = 308,510,590.20
  5. Step 5: Solve for x
    x = 308,510,590.20/20,083.53
  6. Step 6: Final answer
    x = 15,361.37

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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.