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Finding the Fourth Proportional to 11,951.79, 17,930.45 and 4,053.89

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Solution

The fourth proportional to 11,951.79, 17,930.45 and 4,053.89 is: 6,081.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,951.79 : 17,930.45 = 4,053.89 : x
  2. Step 2: Convert to fraction form
    11,951.79/17,930.45 = 4,053.89/x
  3. Step 3: Cross multiply
    11,951.79x = 17,930.45 × 4,053.89
  4. Step 4: Simplify right side
    11,951.79x = 72,687,992.43
  5. Step 5: Solve for x
    x = 72,687,992.43/11,951.79
  6. Step 6: Final answer
    x = 6,081.77

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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.