Home / 12,218.54-18,318.83-3,893.74

Finding the Fourth Proportional to 12,218.54, 18,318.83 and 3,893.74

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Solution

The fourth proportional to 12,218.54, 18,318.83 and 3,893.74 is: 5,837.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.54 : 18,318.83 = 3,893.74 : x
  2. Step 2: Convert to fraction form
    12,218.54/18,318.83 = 3,893.74/x
  3. Step 3: Cross multiply
    12,218.54x = 18,318.83 × 3,893.74
  4. Step 4: Simplify right side
    12,218.54x = 71,328,695.86
  5. Step 5: Solve for x
    x = 71,328,695.86/12,218.54
  6. Step 6: Final answer
    x = 5,837.75

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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.