Home / 39,183.90-54,073.80-21,278.85

Finding the Fourth Proportional to 39,183.90, 54,073.80 and 21,278.85

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Solution

The fourth proportional to 39,183.90, 54,073.80 and 21,278.85 is: 29,364.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,183.90 : 54,073.80 = 21,278.85 : x
  2. Step 2: Convert to fraction form
    39,183.90/54,073.80 = 21,278.85/x
  3. Step 3: Cross multiply
    39,183.90x = 54,073.80 × 21,278.85
  4. Step 4: Simplify right side
    39,183.90x = 1,150,628,279.13
  5. Step 5: Solve for x
    x = 1,150,628,279.13/39,183.90
  6. Step 6: Final answer
    x = 29,364.82

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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.