Home / 18,771.64-28,165.32-8,236.22

Finding the Fourth Proportional to 18,771.64, 28,165.32 and 8,236.22

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Solution

The fourth proportional to 18,771.64, 28,165.32 and 8,236.22 is: 12,357.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.64 : 28,165.32 = 8,236.22 : x
  2. Step 2: Convert to fraction form
    18,771.64/28,165.32 = 8,236.22/x
  3. Step 3: Cross multiply
    18,771.64x = 28,165.32 × 8,236.22
  4. Step 4: Simplify right side
    18,771.64x = 231,975,771.89
  5. Step 5: Solve for x
    x = 231,975,771.89/18,771.64
  6. Step 6: Final answer
    x = 12,357.78

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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.