Home / 39,404.57-54,327.78-28,640.60

Finding the Fourth Proportional to 39,404.57, 54,327.78 and 28,640.60

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Solution

The fourth proportional to 39,404.57, 54,327.78 and 28,640.60 is: 39,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,404.57 : 54,327.78 = 28,640.60 : x
  2. Step 2: Convert to fraction form
    39,404.57/54,327.78 = 28,640.60/x
  3. Step 3: Cross multiply
    39,404.57x = 54,327.78 × 28,640.60
  4. Step 4: Simplify right side
    39,404.57x = 1,555,980,215.87
  5. Step 5: Solve for x
    x = 1,555,980,215.87/39,404.57
  6. Step 6: Final answer
    x = 39,487.30

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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.