Home / 39,816.92-54,947.31-21,912.53

Finding the Fourth Proportional to 39,816.92, 54,947.31 and 21,912.53

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Solution

The fourth proportional to 39,816.92, 54,947.31 and 21,912.53 is: 30,239.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,816.92 : 54,947.31 = 21,912.53 : x
  2. Step 2: Convert to fraction form
    39,816.92/54,947.31 = 21,912.53/x
  3. Step 3: Cross multiply
    39,816.92x = 54,947.31 × 21,912.53
  4. Step 4: Simplify right side
    39,816.92x = 1,204,034,345.14
  5. Step 5: Solve for x
    x = 1,204,034,345.14/39,816.92
  6. Step 6: Final answer
    x = 30,239.27

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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.