Home / 21,251.97-29,328.35-11,691.41

Finding the Fourth Proportional to 21,251.97, 29,328.35 and 11,691.41

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Solution

The fourth proportional to 21,251.97, 29,328.35 and 11,691.41 is: 16,134.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.97 : 29,328.35 = 11,691.41 : x
  2. Step 2: Convert to fraction form
    21,251.97/29,328.35 = 11,691.41/x
  3. Step 3: Cross multiply
    21,251.97x = 29,328.35 × 11,691.41
  4. Step 4: Simplify right side
    21,251.97x = 342,889,559.37
  5. Step 5: Solve for x
    x = 342,889,559.37/21,251.97
  6. Step 6: Final answer
    x = 16,134.48

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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.