Home / 11,890.46-17,819.29-8,965.55

Finding the Fourth Proportional to 11,890.46, 17,819.29 and 8,965.55

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Solution

The fourth proportional to 11,890.46, 17,819.29 and 8,965.55 is: 13,435.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.46 : 17,819.29 = 8,965.55 : x
  2. Step 2: Convert to fraction form
    11,890.46/17,819.29 = 8,965.55/x
  3. Step 3: Cross multiply
    11,890.46x = 17,819.29 × 8,965.55
  4. Step 4: Simplify right side
    11,890.46x = 159,759,791.21
  5. Step 5: Solve for x
    x = 159,759,791.21/11,890.46
  6. Step 6: Final answer
    x = 13,435.96

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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.