Home / 21,682.92-29,920.14-12,249.66

Finding the Fourth Proportional to 21,682.92, 29,920.14 and 12,249.66

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Solution

The fourth proportional to 21,682.92, 29,920.14 and 12,249.66 is: 16,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,682.92 : 29,920.14 = 12,249.66 : x
  2. Step 2: Convert to fraction form
    21,682.92/29,920.14 = 12,249.66/x
  3. Step 3: Cross multiply
    21,682.92x = 29,920.14 × 12,249.66
  4. Step 4: Simplify right side
    21,682.92x = 366,511,542.15
  5. Step 5: Solve for x
    x = 366,511,542.15/21,682.92
  6. Step 6: Final answer
    x = 16,903.24

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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.