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Finding the Fourth Proportional to 11,876.68, 17,815.71 and 3,555.82

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Solution

The fourth proportional to 11,876.68, 17,815.71 and 3,555.82 is: 5,333.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,876.68 : 17,815.71 = 3,555.82 : x
  2. Step 2: Convert to fraction form
    11,876.68/17,815.71 = 3,555.82/x
  3. Step 3: Cross multiply
    11,876.68x = 17,815.71 × 3,555.82
  4. Step 4: Simplify right side
    11,876.68x = 63,349,457.93
  5. Step 5: Solve for x
    x = 63,349,457.93/11,876.68
  6. Step 6: Final answer
    x = 5,333.94

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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.