Home / 39,629.91-54,689.33-21,725.57

Finding the Fourth Proportional to 39,629.91, 54,689.33 and 21,725.57

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Solution

The fourth proportional to 39,629.91, 54,689.33 and 21,725.57 is: 29,981.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,629.91 : 54,689.33 = 21,725.57 : x
  2. Step 2: Convert to fraction form
    39,629.91/54,689.33 = 21,725.57/x
  3. Step 3: Cross multiply
    39,629.91x = 54,689.33 × 21,725.57
  4. Step 4: Simplify right side
    39,629.91x = 1,188,156,485.09
  5. Step 5: Solve for x
    x = 1,188,156,485.09/39,629.91
  6. Step 6: Final answer
    x = 29,981.31

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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.