Home / 13,932-20,872.08-13,361.76

Finding the Fourth Proportional to 13,932, 20,872.08 and 13,361.76

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Solution

The fourth proportional to 13,932, 20,872.08 and 13,361.76 is: 20,017.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932 : 20,872.08 = 13,361.76 : x
  2. Step 2: Convert to fraction form
    13,932/20,872.08 = 13,361.76/x
  3. Step 3: Cross multiply
    13,932x = 20,872.08 × 13,361.76
  4. Step 4: Simplify right side
    13,932x = 278,887,723.66
  5. Step 5: Solve for x
    x = 278,887,723.66/13,932
  6. Step 6: Final answer
    x = 20,017.78

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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.