Home / 39,705.54-54,794.82-21,801.78

Finding the Fourth Proportional to 39,705.54, 54,794.82 and 21,801.78

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Solution

The fourth proportional to 39,705.54, 54,794.82 and 21,801.78 is: 30,087.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,705.54 : 54,794.82 = 21,801.78 : x
  2. Step 2: Convert to fraction form
    39,705.54/54,794.82 = 21,801.78/x
  3. Step 3: Cross multiply
    39,705.54x = 54,794.82 × 21,801.78
  4. Step 4: Simplify right side
    39,705.54x = 1,194,624,610.78
  5. Step 5: Solve for x
    x = 1,194,624,610.78/39,705.54
  6. Step 6: Final answer
    x = 30,087.10

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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.