Home / 39,238.85-54,149.74-21,333.80

Finding the Fourth Proportional to 39,238.85, 54,149.74 and 21,333.80

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Solution

The fourth proportional to 39,238.85, 54,149.74 and 21,333.80 is: 29,440.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,238.85 : 54,149.74 = 21,333.80 : x
  2. Step 2: Convert to fraction form
    39,238.85/54,149.74 = 21,333.80/x
  3. Step 3: Cross multiply
    39,238.85x = 54,149.74 × 21,333.80
  4. Step 4: Simplify right side
    39,238.85x = 1,155,219,399.13
  5. Step 5: Solve for x
    x = 1,155,219,399.13/39,238.85
  6. Step 6: Final answer
    x = 29,440.71

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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.