Home / 27,855.97-38,444-15,921.02

Finding the Fourth Proportional to 27,855.97, 38,444 and 15,921.02

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Solution

The fourth proportional to 27,855.97, 38,444 and 15,921.02 is: 21,972.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,855.97 : 38,444 = 15,921.02 : x
  2. Step 2: Convert to fraction form
    27,855.97/38,444 = 15,921.02/x
  3. Step 3: Cross multiply
    27,855.97x = 38,444 × 15,921.02
  4. Step 4: Simplify right side
    27,855.97x = 612,067,692.88
  5. Step 5: Solve for x
    x = 612,067,692.88/27,855.97
  6. Step 6: Final answer
    x = 21,972.59

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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.