Home / 21,103.93-29,121.96-11,671.75

Finding the Fourth Proportional to 21,103.93, 29,121.96 and 11,671.75

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Solution

The fourth proportional to 21,103.93, 29,121.96 and 11,671.75 is: 16,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.93 : 29,121.96 = 11,671.75 : x
  2. Step 2: Convert to fraction form
    21,103.93/29,121.96 = 11,671.75/x
  3. Step 3: Cross multiply
    21,103.93x = 29,121.96 × 11,671.75
  4. Step 4: Simplify right side
    21,103.93x = 339,904,236.63
  5. Step 5: Solve for x
    x = 339,904,236.63/21,103.93
  6. Step 6: Final answer
    x = 16,106.21

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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.