Home / 15,850.53-21,874.07-8,680.75

Finding the Fourth Proportional to 15,850.53, 21,874.07 and 8,680.75

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Solution

The fourth proportional to 15,850.53, 21,874.07 and 8,680.75 is: 11,979.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.53 : 21,874.07 = 8,680.75 : x
  2. Step 2: Convert to fraction form
    15,850.53/21,874.07 = 8,680.75/x
  3. Step 3: Cross multiply
    15,850.53x = 21,874.07 × 8,680.75
  4. Step 4: Simplify right side
    15,850.53x = 189,883,300.17
  5. Step 5: Solve for x
    x = 189,883,300.17/15,850.53
  6. Step 6: Final answer
    x = 11,979.62

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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.