Home / 39,822.80-54,957.96-21,919.36

Finding the Fourth Proportional to 39,822.80, 54,957.96 and 21,919.36

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Solution

The fourth proportional to 39,822.80, 54,957.96 and 21,919.36 is: 30,250.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,822.80 : 54,957.96 = 21,919.36 : x
  2. Step 2: Convert to fraction form
    39,822.80/54,957.96 = 21,919.36/x
  3. Step 3: Cross multiply
    39,822.80x = 54,957.96 × 21,919.36
  4. Step 4: Simplify right side
    39,822.80x = 1,204,643,310.11
  5. Step 5: Solve for x
    x = 1,204,643,310.11/39,822.80
  6. Step 6: Final answer
    x = 30,250.09

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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.