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Finding the Fourth Proportional to 18,803.01, 28,200.18 and 5,475.98

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Solution

The fourth proportional to 18,803.01, 28,200.18 and 5,475.98 is: 8,212.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.01 : 28,200.18 = 5,475.98 : x
  2. Step 2: Convert to fraction form
    18,803.01/28,200.18 = 5,475.98/x
  3. Step 3: Cross multiply
    18,803.01x = 28,200.18 × 5,475.98
  4. Step 4: Simplify right side
    18,803.01x = 154,423,621.68
  5. Step 5: Solve for x
    x = 154,423,621.68/18,803.01
  6. Step 6: Final answer
    x = 8,212.71

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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.