Home / 15,850.39-21,873.34-8,680.23

Finding the Fourth Proportional to 15,850.39, 21,873.34 and 8,680.23

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Solution

The fourth proportional to 15,850.39, 21,873.34 and 8,680.23 is: 11,978.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.39 : 21,873.34 = 8,680.23 : x
  2. Step 2: Convert to fraction form
    15,850.39/21,873.34 = 8,680.23/x
  3. Step 3: Cross multiply
    15,850.39x = 21,873.34 × 8,680.23
  4. Step 4: Simplify right side
    15,850.39x = 189,865,622.07
  5. Step 5: Solve for x
    x = 189,865,622.07/15,850.39
  6. Step 6: Final answer
    x = 11,978.61

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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.