Home / 39,105.46-53,965.82-21,200.75

Finding the Fourth Proportional to 39,105.46, 53,965.82 and 21,200.75

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Solution

The fourth proportional to 39,105.46, 53,965.82 and 21,200.75 is: 29,257.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,105.46 : 53,965.82 = 21,200.75 : x
  2. Step 2: Convert to fraction form
    39,105.46/53,965.82 = 21,200.75/x
  3. Step 3: Cross multiply
    39,105.46x = 53,965.82 × 21,200.75
  4. Step 4: Simplify right side
    39,105.46x = 1,144,115,858.37
  5. Step 5: Solve for x
    x = 1,144,115,858.37/39,105.46
  6. Step 6: Final answer
    x = 29,257.19

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Double scale
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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.