Home / 21,251.91-29,326.73-11,691.19

Finding the Fourth Proportional to 21,251.91, 29,326.73 and 11,691.19

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Solution

The fourth proportional to 21,251.91, 29,326.73 and 11,691.19 is: 16,133.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.91 : 29,326.73 = 11,691.19 : x
  2. Step 2: Convert to fraction form
    21,251.91/29,326.73 = 11,691.19/x
  3. Step 3: Cross multiply
    21,251.91x = 29,326.73 × 11,691.19
  4. Step 4: Simplify right side
    21,251.91x = 342,864,372.51
  5. Step 5: Solve for x
    x = 342,864,372.51/21,251.91
  6. Step 6: Final answer
    x = 16,133.34

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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.