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Finding the Fourth Proportional to 18,773.56, 28,152.04 and 5,623.48

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Solution

The fourth proportional to 18,773.56, 28,152.04 and 5,623.48 is: 8,432.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.56 : 28,152.04 = 5,623.48 : x
  2. Step 2: Convert to fraction form
    18,773.56/28,152.04 = 5,623.48/x
  3. Step 3: Cross multiply
    18,773.56x = 28,152.04 × 5,623.48
  4. Step 4: Simplify right side
    18,773.56x = 158,312,433.90
  5. Step 5: Solve for x
    x = 158,312,433.90/18,773.56
  6. Step 6: Final answer
    x = 8,432.73

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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.