Home / 11,385.36-17,067.62-3,985.78

Finding the Fourth Proportional to 11,385.36, 17,067.62 and 3,985.78

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Solution

The fourth proportional to 11,385.36, 17,067.62 and 3,985.78 is: 5,975.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.36 : 17,067.62 = 3,985.78 : x
  2. Step 2: Convert to fraction form
    11,385.36/17,067.62 = 3,985.78/x
  3. Step 3: Cross multiply
    11,385.36x = 17,067.62 × 3,985.78
  4. Step 4: Simplify right side
    11,385.36x = 68,027,758.51
  5. Step 5: Solve for x
    x = 68,027,758.51/11,385.36
  6. Step 6: Final answer
    x = 5,975.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.