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Finding the Fourth Proportional to 18,773.64, 28,168.32 and 8,238.22

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Solution

The fourth proportional to 18,773.64, 28,168.32 and 8,238.22 is: 12,360.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.64 : 28,168.32 = 8,238.22 : x
  2. Step 2: Convert to fraction form
    18,773.64/28,168.32 = 8,238.22/x
  3. Step 3: Cross multiply
    18,773.64x = 28,168.32 × 8,238.22
  4. Step 4: Simplify right side
    18,773.64x = 232,056,817.19
  5. Step 5: Solve for x
    x = 232,056,817.19/18,773.64
  6. Step 6: Final answer
    x = 12,360.78

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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.