Home / 21,072.33-29,080.65-12,119.82

Finding the Fourth Proportional to 21,072.33, 29,080.65 and 12,119.82

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Solution

The fourth proportional to 21,072.33, 29,080.65 and 12,119.82 is: 16,725.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.33 : 29,080.65 = 12,119.82 : x
  2. Step 2: Convert to fraction form
    21,072.33/29,080.65 = 12,119.82/x
  3. Step 3: Cross multiply
    21,072.33x = 29,080.65 × 12,119.82
  4. Step 4: Simplify right side
    21,072.33x = 352,452,243.48
  5. Step 5: Solve for x
    x = 352,452,243.48/21,072.33
  6. Step 6: Final answer
    x = 16,725.83

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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.