Home / 21,342.11-29,452.11-11,910.66

Finding the Fourth Proportional to 21,342.11, 29,452.11 and 11,910.66

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Solution

The fourth proportional to 21,342.11, 29,452.11 and 11,910.66 is: 16,436.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,342.11 : 29,452.11 = 11,910.66 : x
  2. Step 2: Convert to fraction form
    21,342.11/29,452.11 = 11,910.66/x
  3. Step 3: Cross multiply
    21,342.11x = 29,452.11 × 11,910.66
  4. Step 4: Simplify right side
    21,342.11x = 350,794,068.49
  5. Step 5: Solve for x
    x = 350,794,068.49/21,342.11
  6. Step 6: Final answer
    x = 16,436.71

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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.