Home / 16,680.82-23,020.11-9,511.78

Finding the Fourth Proportional to 16,680.82, 23,020.11 and 9,511.78

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Solution

The fourth proportional to 16,680.82, 23,020.11 and 9,511.78 is: 13,126.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,680.82 : 23,020.11 = 9,511.78 : x
  2. Step 2: Convert to fraction form
    16,680.82/23,020.11 = 9,511.78/x
  3. Step 3: Cross multiply
    16,680.82x = 23,020.11 × 9,511.78
  4. Step 4: Simplify right side
    16,680.82x = 218,962,221.90
  5. Step 5: Solve for x
    x = 218,962,221.90/16,680.82
  6. Step 6: Final answer
    x = 13,126.59

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Double scale
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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.