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Finding the Fourth Proportional to 18,598.71, 27,898.06 and 4,747.71

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Solution

The fourth proportional to 18,598.71, 27,898.06 and 4,747.71 is: 7,121.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,598.71 : 27,898.06 = 4,747.71 : x
  2. Step 2: Convert to fraction form
    18,598.71/27,898.06 = 4,747.71/x
  3. Step 3: Cross multiply
    18,598.71x = 27,898.06 × 4,747.71
  4. Step 4: Simplify right side
    18,598.71x = 132,451,898.44
  5. Step 5: Solve for x
    x = 132,451,898.44/18,598.71
  6. Step 6: Final answer
    x = 7,121.56

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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.