Home / 39,775.54-54,891.12-21,871.71

Finding the Fourth Proportional to 39,775.54, 54,891.12 and 21,871.71

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Solution

The fourth proportional to 39,775.54, 54,891.12 and 21,871.71 is: 30,183.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,775.54 : 54,891.12 = 21,871.71 : x
  2. Step 2: Convert to fraction form
    39,775.54/54,891.12 = 21,871.71/x
  3. Step 3: Cross multiply
    39,775.54x = 54,891.12 × 21,871.71
  4. Step 4: Simplify right side
    39,775.54x = 1,200,562,658.22
  5. Step 5: Solve for x
    x = 1,200,562,658.22/39,775.54
  6. Step 6: Final answer
    x = 30,183.44

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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.