Home / 11,711.76-17,569.20-3,918.96

Finding the Fourth Proportional to 11,711.76, 17,569.20 and 3,918.96

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Solution

The fourth proportional to 11,711.76, 17,569.20 and 3,918.96 is: 5,878.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.76 : 17,569.20 = 3,918.96 : x
  2. Step 2: Convert to fraction form
    11,711.76/17,569.20 = 3,918.96/x
  3. Step 3: Cross multiply
    11,711.76x = 17,569.20 × 3,918.96
  4. Step 4: Simplify right side
    11,711.76x = 68,852,992.03
  5. Step 5: Solve for x
    x = 68,852,992.03/11,711.76
  6. Step 6: Final answer
    x = 5,878.96

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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.