Home / 19,379.78-29,072.61-8,286.50

Finding the Fourth Proportional to 19,379.78, 29,072.61 and 8,286.50

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Solution

The fourth proportional to 19,379.78, 29,072.61 and 8,286.50 is: 12,431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,379.78 : 29,072.61 = 8,286.50 : x
  2. Step 2: Convert to fraction form
    19,379.78/29,072.61 = 8,286.50/x
  3. Step 3: Cross multiply
    19,379.78x = 29,072.61 × 8,286.50
  4. Step 4: Simplify right side
    19,379.78x = 240,910,182.77
  5. Step 5: Solve for x
    x = 240,910,182.77/19,379.78
  6. Step 6: Final answer
    x = 12,431.01

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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.