Home / 21,103.94-29,121.73-11,672.51

Finding the Fourth Proportional to 21,103.94, 29,121.73 and 11,672.51

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Solution

The fourth proportional to 21,103.94, 29,121.73 and 11,672.51 is: 16,107.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.94 : 29,121.73 = 11,672.51 : x
  2. Step 2: Convert to fraction form
    21,103.94/29,121.73 = 11,672.51/x
  3. Step 3: Cross multiply
    21,103.94x = 29,121.73 × 11,672.51
  4. Step 4: Simplify right side
    21,103.94x = 339,923,509.85
  5. Step 5: Solve for x
    x = 339,923,509.85/21,103.94
  6. Step 6: Final answer
    x = 16,107.11

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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.