Home / 12,188.89-18,286.08-4,397.71

Finding the Fourth Proportional to 12,188.89, 18,286.08 and 4,397.71

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Solution

The fourth proportional to 12,188.89, 18,286.08 and 4,397.71 is: 6,597.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.89 : 18,286.08 = 4,397.71 : x
  2. Step 2: Convert to fraction form
    12,188.89/18,286.08 = 4,397.71/x
  3. Step 3: Cross multiply
    12,188.89x = 18,286.08 × 4,397.71
  4. Step 4: Simplify right side
    12,188.89x = 80,416,876.88
  5. Step 5: Solve for x
    x = 80,416,876.88/12,188.89
  6. Step 6: Final answer
    x = 6,597.56

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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.