Home / 20,361.11-28,093.40-13,644.29

Finding the Fourth Proportional to 20,361.11, 28,093.40 and 13,644.29

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Solution

The fourth proportional to 20,361.11, 28,093.40 and 13,644.29 is: 18,825.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.11 : 28,093.40 = 13,644.29 : x
  2. Step 2: Convert to fraction form
    20,361.11/28,093.40 = 13,644.29/x
  3. Step 3: Cross multiply
    20,361.11x = 28,093.40 × 13,644.29
  4. Step 4: Simplify right side
    20,361.11x = 383,314,288.00
  5. Step 5: Solve for x
    x = 383,314,288.00/20,361.11
  6. Step 6: Final answer
    x = 18,825.81

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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.