Home / 39,702.87-54,791.37-21,799.25

Finding the Fourth Proportional to 39,702.87, 54,791.37 and 21,799.25

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Solution

The fourth proportional to 39,702.87, 54,791.37 and 21,799.25 is: 30,083.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,702.87 : 54,791.37 = 21,799.25 : x
  2. Step 2: Convert to fraction form
    39,702.87/54,791.37 = 21,799.25/x
  3. Step 3: Cross multiply
    39,702.87x = 54,791.37 × 21,799.25
  4. Step 4: Simplify right side
    39,702.87x = 1,194,410,498.52
  5. Step 5: Solve for x
    x = 1,194,410,498.52/39,702.87
  6. Step 6: Final answer
    x = 30,083.73

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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.