Home / 39,770.20-54,882.92-21,865.51

Finding the Fourth Proportional to 39,770.20, 54,882.92 and 21,865.51

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Solution

The fourth proportional to 39,770.20, 54,882.92 and 21,865.51 is: 30,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.20 : 54,882.92 = 21,865.51 : x
  2. Step 2: Convert to fraction form
    39,770.20/54,882.92 = 21,865.51/x
  3. Step 3: Cross multiply
    39,770.20x = 54,882.92 × 21,865.51
  4. Step 4: Simplify right side
    39,770.20x = 1,200,043,036.09
  5. Step 5: Solve for x
    x = 1,200,043,036.09/39,770.20
  6. Step 6: Final answer
    x = 30,174.43

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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.