Home / 11,890.89-17,812.11-5,631.92

Finding the Fourth Proportional to 11,890.89, 17,812.11 and 5,631.92

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Solution

The fourth proportional to 11,890.89, 17,812.11 and 5,631.92 is: 8,436.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.89 : 17,812.11 = 5,631.92 : x
  2. Step 2: Convert to fraction form
    11,890.89/17,812.11 = 5,631.92/x
  3. Step 3: Cross multiply
    11,890.89x = 17,812.11 × 5,631.92
  4. Step 4: Simplify right side
    11,890.89x = 100,316,378.55
  5. Step 5: Solve for x
    x = 100,316,378.55/11,890.89
  6. Step 6: Final answer
    x = 8,436.41

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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.