Home / 12,191.20-18,286.80-4,795.90

Finding the Fourth Proportional to 12,191.20, 18,286.80 and 4,795.90

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Solution

The fourth proportional to 12,191.20, 18,286.80 and 4,795.90 is: 7,193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,191.20 : 18,286.80 = 4,795.90 : x
  2. Step 2: Convert to fraction form
    12,191.20/18,286.80 = 4,795.90/x
  3. Step 3: Cross multiply
    12,191.20x = 18,286.80 × 4,795.90
  4. Step 4: Simplify right side
    12,191.20x = 87,701,664.12
  5. Step 5: Solve for x
    x = 87,701,664.12/12,191.20
  6. Step 6: Final answer
    x = 7,193.85

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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.