Home / 39,171.87-54,057.21-21,266.88

Finding the Fourth Proportional to 39,171.87, 54,057.21 and 21,266.88

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Solution

The fourth proportional to 39,171.87, 54,057.21 and 21,266.88 is: 29,348.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,171.87 : 54,057.21 = 21,266.88 : x
  2. Step 2: Convert to fraction form
    39,171.87/54,057.21 = 21,266.88/x
  3. Step 3: Cross multiply
    39,171.87x = 54,057.21 × 21,266.88
  4. Step 4: Simplify right side
    39,171.87x = 1,149,628,198.20
  5. Step 5: Solve for x
    x = 1,149,628,198.20/39,171.87
  6. Step 6: Final answer
    x = 29,348.31

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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.