Home / 21,103.44-29,121.51-11,671.38

Finding the Fourth Proportional to 21,103.44, 29,121.51 and 11,671.38

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Solution

The fourth proportional to 21,103.44, 29,121.51 and 11,671.38 is: 16,105.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.44 : 29,121.51 = 11,671.38 : x
  2. Step 2: Convert to fraction form
    21,103.44/29,121.51 = 11,671.38/x
  3. Step 3: Cross multiply
    21,103.44x = 29,121.51 × 11,671.38
  4. Step 4: Simplify right side
    21,103.44x = 339,888,209.38
  5. Step 5: Solve for x
    x = 339,888,209.38/21,103.44
  6. Step 6: Final answer
    x = 16,105.82

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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.