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Finding the Fourth Proportional to 18,059.70, 27,053.10 and 12,519.30

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Solution

The fourth proportional to 18,059.70, 27,053.10 and 12,519.30 is: 18,753.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,059.70 : 27,053.10 = 12,519.30 : x
  2. Step 2: Convert to fraction form
    18,059.70/27,053.10 = 12,519.30/x
  3. Step 3: Cross multiply
    18,059.70x = 27,053.10 × 12,519.30
  4. Step 4: Simplify right side
    18,059.70x = 338,685,874.83
  5. Step 5: Solve for x
    x = 338,685,874.83/18,059.70
  6. Step 6: Final answer
    x = 18,753.68

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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.