Home / 21,251.01-29,326.80-11,691.28

Finding the Fourth Proportional to 21,251.01, 29,326.80 and 11,691.28

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Solution

The fourth proportional to 21,251.01, 29,326.80 and 11,691.28 is: 16,134.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.01 : 29,326.80 = 11,691.28 : x
  2. Step 2: Convert to fraction form
    21,251.01/29,326.80 = 11,691.28/x
  3. Step 3: Cross multiply
    21,251.01x = 29,326.80 × 11,691.28
  4. Step 4: Simplify right side
    21,251.01x = 342,867,830.30
  5. Step 5: Solve for x
    x = 342,867,830.30/21,251.01
  6. Step 6: Final answer
    x = 16,134.19

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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.