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Finding the Fourth Proportional to 18,773.67, 28,168.34 and 8,238.25

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Solution

The fourth proportional to 18,773.67, 28,168.34 and 8,238.25 is: 12,360.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.67 : 28,168.34 = 8,238.25 : x
  2. Step 2: Convert to fraction form
    18,773.67/28,168.34 = 8,238.25/x
  3. Step 3: Cross multiply
    18,773.67x = 28,168.34 × 8,238.25
  4. Step 4: Simplify right side
    18,773.67x = 232,057,827.01
  5. Step 5: Solve for x
    x = 232,057,827.01/18,773.67
  6. Step 6: Final answer
    x = 12,360.81

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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.