Home / 21,104.11-29,123.17-11,672.47

Finding the Fourth Proportional to 21,104.11, 29,123.17 and 11,672.47

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Solution

The fourth proportional to 21,104.11, 29,123.17 and 11,672.47 is: 16,107.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.11 : 29,123.17 = 11,672.47 : x
  2. Step 2: Convert to fraction form
    21,104.11/29,123.17 = 11,672.47/x
  3. Step 3: Cross multiply
    21,104.11x = 29,123.17 × 11,672.47
  4. Step 4: Simplify right side
    21,104.11x = 339,939,328.13
  5. Step 5: Solve for x
    x = 339,939,328.13/21,104.11
  6. Step 6: Final answer
    x = 16,107.73

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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.