Home / 20,067.48-27,692.64-11,115.36

Finding the Fourth Proportional to 20,067.48, 27,692.64 and 11,115.36

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Solution

The fourth proportional to 20,067.48, 27,692.64 and 11,115.36 is: 15,338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,067.48 : 27,692.64 = 11,115.36 : x
  2. Step 2: Convert to fraction form
    20,067.48/27,692.64 = 11,115.36/x
  3. Step 3: Cross multiply
    20,067.48x = 27,692.64 × 11,115.36
  4. Step 4: Simplify right side
    20,067.48x = 307,813,662.95
  5. Step 5: Solve for x
    x = 307,813,662.95/20,067.48
  6. Step 6: Final answer
    x = 15,338.93

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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.