Home / 12,661.32-18,991.44-3,895.86

Finding the Fourth Proportional to 12,661.32, 18,991.44 and 3,895.86

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Solution

The fourth proportional to 12,661.32, 18,991.44 and 3,895.86 is: 5,843.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.32 : 18,991.44 = 3,895.86 : x
  2. Step 2: Convert to fraction form
    12,661.32/18,991.44 = 3,895.86/x
  3. Step 3: Cross multiply
    12,661.32x = 18,991.44 × 3,895.86
  4. Step 4: Simplify right side
    12,661.32x = 73,987,991.44
  5. Step 5: Solve for x
    x = 73,987,991.44/12,661.32
  6. Step 6: Final answer
    x = 5,843.62

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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.