Home / 39,738.70-54,839.13-21,589.34

Finding the Fourth Proportional to 39,738.70, 54,839.13 and 21,589.34

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Solution

The fourth proportional to 39,738.70, 54,839.13 and 21,589.34 is: 29,793.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,738.70 : 54,839.13 = 21,589.34 : x
  2. Step 2: Convert to fraction form
    39,738.70/54,839.13 = 21,589.34/x
  3. Step 3: Cross multiply
    39,738.70x = 54,839.13 × 21,589.34
  4. Step 4: Simplify right side
    39,738.70x = 1,183,940,267.72
  5. Step 5: Solve for x
    x = 1,183,940,267.72/39,738.70
  6. Step 6: Final answer
    x = 29,793.13

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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.