Home / 39,822.96-54,959.36-21,921.60

Finding the Fourth Proportional to 39,822.96, 54,959.36 and 21,921.60

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Solution

The fourth proportional to 39,822.96, 54,959.36 and 21,921.60 is: 30,253.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,822.96 : 54,959.36 = 21,921.60 : x
  2. Step 2: Convert to fraction form
    39,822.96/54,959.36 = 21,921.60/x
  3. Step 3: Cross multiply
    39,822.96x = 54,959.36 × 21,921.60
  4. Step 4: Simplify right side
    39,822.96x = 1,204,797,106.18
  5. Step 5: Solve for x
    x = 1,204,797,106.18/39,822.96
  6. Step 6: Final answer
    x = 30,253.83

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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.