Home / 21,291.46-29,382.83-11,731.96

Finding the Fourth Proportional to 21,291.46, 29,382.83 and 11,731.96

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Solution

The fourth proportional to 21,291.46, 29,382.83 and 11,731.96 is: 16,190.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.46 : 29,382.83 = 11,731.96 : x
  2. Step 2: Convert to fraction form
    21,291.46/29,382.83 = 11,731.96/x
  3. Step 3: Cross multiply
    21,291.46x = 29,382.83 × 11,731.96
  4. Step 4: Simplify right side
    21,291.46x = 344,718,186.25
  5. Step 5: Solve for x
    x = 344,718,186.25/21,291.46
  6. Step 6: Final answer
    x = 16,190.44

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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.