Home / 39,789.36-54,907.62-21,883.22

Finding the Fourth Proportional to 39,789.36, 54,907.62 and 21,883.22

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Solution

The fourth proportional to 39,789.36, 54,907.62 and 21,883.22 is: 30,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.36 : 54,907.62 = 21,883.22 : x
  2. Step 2: Convert to fraction form
    39,789.36/54,907.62 = 21,883.22/x
  3. Step 3: Cross multiply
    39,789.36x = 54,907.62 × 21,883.22
  4. Step 4: Simplify right side
    39,789.36x = 1,201,555,253.60
  5. Step 5: Solve for x
    x = 1,201,555,253.60/39,789.36
  6. Step 6: Final answer
    x = 30,197.90

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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.