Home / 12,654.73-18,983.91-3,890.38

Finding the Fourth Proportional to 12,654.73, 18,983.91 and 3,890.38

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Solution

The fourth proportional to 12,654.73, 18,983.91 and 3,890.38 is: 5,836.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.73 : 18,983.91 = 3,890.38 : x
  2. Step 2: Convert to fraction form
    12,654.73/18,983.91 = 3,890.38/x
  3. Step 3: Cross multiply
    12,654.73x = 18,983.91 × 3,890.38
  4. Step 4: Simplify right side
    12,654.73x = 73,854,623.79
  5. Step 5: Solve for x
    x = 73,854,623.79/12,654.73
  6. Step 6: Final answer
    x = 5,836.13

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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.