Home / 39,799.48-54,921.11-21,891.59

Finding the Fourth Proportional to 39,799.48, 54,921.11 and 21,891.59

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Solution

The fourth proportional to 39,799.48, 54,921.11 and 21,891.59 is: 30,209.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,799.48 : 54,921.11 = 21,891.59 : x
  2. Step 2: Convert to fraction form
    39,799.48/54,921.11 = 21,891.59/x
  3. Step 3: Cross multiply
    39,799.48x = 54,921.11 × 21,891.59
  4. Step 4: Simplify right side
    39,799.48x = 1,202,310,614.50
  5. Step 5: Solve for x
    x = 1,202,310,614.50/39,799.48
  6. Step 6: Final answer
    x = 30,209.21

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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.