Home / 39,709.92-54,800.64-21,561.41

Finding the Fourth Proportional to 39,709.92, 54,800.64 and 21,561.41

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Solution

The fourth proportional to 39,709.92, 54,800.64 and 21,561.41 is: 29,755.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,709.92 : 54,800.64 = 21,561.41 : x
  2. Step 2: Convert to fraction form
    39,709.92/54,800.64 = 21,561.41/x
  3. Step 3: Cross multiply
    39,709.92x = 54,800.64 × 21,561.41
  4. Step 4: Simplify right side
    39,709.92x = 1,181,579,067.30
  5. Step 5: Solve for x
    x = 1,181,579,067.30/39,709.92
  6. Step 6: Final answer
    x = 29,755.26

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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.