Home / 39,185.70-54,076.10-21,280.56

Finding the Fourth Proportional to 39,185.70, 54,076.10 and 21,280.56

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Solution

The fourth proportional to 39,185.70, 54,076.10 and 21,280.56 is: 29,367.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,185.70 : 54,076.10 = 21,280.56 : x
  2. Step 2: Convert to fraction form
    39,185.70/54,076.10 = 21,280.56/x
  3. Step 3: Cross multiply
    39,185.70x = 54,076.10 × 21,280.56
  4. Step 4: Simplify right side
    39,185.70x = 1,150,769,584.21
  5. Step 5: Solve for x
    x = 1,150,769,584.21/39,185.70
  6. Step 6: Final answer
    x = 29,367.08

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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.