Home / 39,775.52-54,891.13-21,871.53

Finding the Fourth Proportional to 39,775.52, 54,891.13 and 21,871.53

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Solution

The fourth proportional to 39,775.52, 54,891.13 and 21,871.53 is: 30,183.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,775.52 : 54,891.13 = 21,871.53 : x
  2. Step 2: Convert to fraction form
    39,775.52/54,891.13 = 21,871.53/x
  3. Step 3: Cross multiply
    39,775.52x = 54,891.13 × 21,871.53
  4. Step 4: Simplify right side
    39,775.52x = 1,200,552,996.53
  5. Step 5: Solve for x
    x = 1,200,552,996.53/39,775.52
  6. Step 6: Final answer
    x = 30,183.21

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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.