Home / 18,771.60-28,165.25-8,236.18

Finding the Fourth Proportional to 18,771.60, 28,165.25 and 8,236.18

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Solution

The fourth proportional to 18,771.60, 28,165.25 and 8,236.18 is: 12,357.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.60 : 28,165.25 = 8,236.18 : x
  2. Step 2: Convert to fraction form
    18,771.60/28,165.25 = 8,236.18/x
  3. Step 3: Cross multiply
    18,771.60x = 28,165.25 × 8,236.18
  4. Step 4: Simplify right side
    18,771.60x = 231,974,124.54
  5. Step 5: Solve for x
    x = 231,974,124.54/18,771.60
  6. Step 6: Final answer
    x = 12,357.72

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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.