Home / 39,785.87-54,905.91-21,882.26

Finding the Fourth Proportional to 39,785.87, 54,905.91 and 21,882.26

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Solution

The fourth proportional to 39,785.87, 54,905.91 and 21,882.26 is: 30,198.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,785.87 : 54,905.91 = 21,882.26 : x
  2. Step 2: Convert to fraction form
    39,785.87/54,905.91 = 21,882.26/x
  3. Step 3: Cross multiply
    39,785.87x = 54,905.91 × 21,882.26
  4. Step 4: Simplify right side
    39,785.87x = 1,201,465,398.16
  5. Step 5: Solve for x
    x = 1,201,465,398.16/39,785.87
  6. Step 6: Final answer
    x = 30,198.29

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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.