Home / 21,249.07-29,324.43-11,689.36

Finding the Fourth Proportional to 21,249.07, 29,324.43 and 11,689.36

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Solution

The fourth proportional to 21,249.07, 29,324.43 and 11,689.36 is: 16,131.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.07 : 29,324.43 = 11,689.36 : x
  2. Step 2: Convert to fraction form
    21,249.07/29,324.43 = 11,689.36/x
  3. Step 3: Cross multiply
    21,249.07x = 29,324.43 × 11,689.36
  4. Step 4: Simplify right side
    21,249.07x = 342,783,819.06
  5. Step 5: Solve for x
    x = 342,783,819.06/21,249.07
  6. Step 6: Final answer
    x = 16,131.71

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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.