Home / 39,296.58-54,229.29-21,391.72

Finding the Fourth Proportional to 39,296.58, 54,229.29 and 21,391.72

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Solution

The fourth proportional to 39,296.58, 54,229.29 and 21,391.72 is: 29,520.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,296.58 : 54,229.29 = 21,391.72 : x
  2. Step 2: Convert to fraction form
    39,296.58/54,229.29 = 21,391.72/x
  3. Step 3: Cross multiply
    39,296.58x = 54,229.29 × 21,391.72
  4. Step 4: Simplify right side
    39,296.58x = 1,160,057,680.52
  5. Step 5: Solve for x
    x = 1,160,057,680.52/39,296.58
  6. Step 6: Final answer
    x = 29,520.58

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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.