Home / 15,850.90-21,874.03-8,680.73

Finding the Fourth Proportional to 15,850.90, 21,874.03 and 8,680.73

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Solution

The fourth proportional to 15,850.90, 21,874.03 and 8,680.73 is: 11,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.90 : 21,874.03 = 8,680.73 : x
  2. Step 2: Convert to fraction form
    15,850.90/21,874.03 = 8,680.73/x
  3. Step 3: Cross multiply
    15,850.90x = 21,874.03 × 8,680.73
  4. Step 4: Simplify right side
    15,850.90x = 189,882,581.43
  5. Step 5: Solve for x
    x = 189,882,581.43/15,850.90
  6. Step 6: Final answer
    x = 11,979.30

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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.