Home / 12,661.44-18,992.20-3,896.30

Finding the Fourth Proportional to 12,661.44, 18,992.20 and 3,896.30

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Solution

The fourth proportional to 12,661.44, 18,992.20 and 3,896.30 is: 5,844.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.44 : 18,992.20 = 3,896.30 : x
  2. Step 2: Convert to fraction form
    12,661.44/18,992.20 = 3,896.30/x
  3. Step 3: Cross multiply
    12,661.44x = 18,992.20 × 3,896.30
  4. Step 4: Simplify right side
    12,661.44x = 73,999,308.86
  5. Step 5: Solve for x
    x = 73,999,308.86/12,661.44
  6. Step 6: Final answer
    x = 5,844.46

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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.