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Finding the Fourth Proportional to 18,719.00, 28,071.19 and 8,044.38

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Solution

The fourth proportional to 18,719.00, 28,071.19 and 8,044.38 is: 12,063.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.00 : 28,071.19 = 8,044.38 : x
  2. Step 2: Convert to fraction form
    18,719.00/28,071.19 = 8,044.38/x
  3. Step 3: Cross multiply
    18,719.00x = 28,071.19 × 8,044.38
  4. Step 4: Simplify right side
    18,719.00x = 225,815,329.47
  5. Step 5: Solve for x
    x = 225,815,329.47/18,719.00
  6. Step 6: Final answer
    x = 12,063.43

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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.