Home / 39,890.22-54,972.74-28,540.03

Finding the Fourth Proportional to 39,890.22, 54,972.74 and 28,540.03

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Solution

The fourth proportional to 39,890.22, 54,972.74 and 28,540.03 is: 39,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.22 : 54,972.74 = 28,540.03 : x
  2. Step 2: Convert to fraction form
    39,890.22/54,972.74 = 28,540.03/x
  3. Step 3: Cross multiply
    39,890.22x = 54,972.74 × 28,540.03
  4. Step 4: Simplify right side
    39,890.22x = 1,568,923,797.29
  5. Step 5: Solve for x
    x = 1,568,923,797.29/39,890.22
  6. Step 6: Final answer
    x = 39,331.04

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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.