Home / 15,899.24-21,940.90-8,825.96

Finding the Fourth Proportional to 15,899.24, 21,940.90 and 8,825.96

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Solution

The fourth proportional to 15,899.24, 21,940.90 and 8,825.96 is: 12,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.24 : 21,940.90 = 8,825.96 : x
  2. Step 2: Convert to fraction form
    15,899.24/21,940.90 = 8,825.96/x
  3. Step 3: Cross multiply
    15,899.24x = 21,940.90 × 8,825.96
  4. Step 4: Simplify right side
    15,899.24x = 193,649,505.76
  5. Step 5: Solve for x
    x = 193,649,505.76/15,899.24
  6. Step 6: Final answer
    x = 12,179.80

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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.