Home / 11,390.45-17,085.78-3,995.08

Finding the Fourth Proportional to 11,390.45, 17,085.78 and 3,995.08

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Solution

The fourth proportional to 11,390.45, 17,085.78 and 3,995.08 is: 5,992.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.45 : 17,085.78 = 3,995.08 : x
  2. Step 2: Convert to fraction form
    11,390.45/17,085.78 = 3,995.08/x
  3. Step 3: Cross multiply
    11,390.45x = 17,085.78 × 3,995.08
  4. Step 4: Simplify right side
    11,390.45x = 68,259,015.25
  5. Step 5: Solve for x
    x = 68,259,015.25/11,390.45
  6. Step 6: Final answer
    x = 5,992.66

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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.