Home / 11,680.38-16,129.62-8,511.96

Finding the Fourth Proportional to 11,680.38, 16,129.62 and 8,511.96

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Solution

The fourth proportional to 11,680.38, 16,129.62 and 8,511.96 is: 11,754.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.38 : 16,129.62 = 8,511.96 : x
  2. Step 2: Convert to fraction form
    11,680.38/16,129.62 = 8,511.96/x
  3. Step 3: Cross multiply
    11,680.38x = 16,129.62 × 8,511.96
  4. Step 4: Simplify right side
    11,680.38x = 137,294,680.26
  5. Step 5: Solve for x
    x = 137,294,680.26/11,680.38
  6. Step 6: Final answer
    x = 11,754.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.