Home / 15,850.53-21,873.98-8,680.32

Finding the Fourth Proportional to 15,850.53, 21,873.98 and 8,680.32

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Solution

The fourth proportional to 15,850.53, 21,873.98 and 8,680.32 is: 11,978.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.53 : 21,873.98 = 8,680.32 : x
  2. Step 2: Convert to fraction form
    15,850.53/21,873.98 = 8,680.32/x
  3. Step 3: Cross multiply
    15,850.53x = 21,873.98 × 8,680.32
  4. Step 4: Simplify right side
    15,850.53x = 189,873,136.97
  5. Step 5: Solve for x
    x = 189,873,136.97/15,850.53
  6. Step 6: Final answer
    x = 11,978.97

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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.