Home / 15,899.58-21,940.31-8,825.44

Finding the Fourth Proportional to 15,899.58, 21,940.31 and 8,825.44

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Solution

The fourth proportional to 15,899.58, 21,940.31 and 8,825.44 is: 12,178.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.58 : 21,940.31 = 8,825.44 : x
  2. Step 2: Convert to fraction form
    15,899.58/21,940.31 = 8,825.44/x
  3. Step 3: Cross multiply
    15,899.58x = 21,940.31 × 8,825.44
  4. Step 4: Simplify right side
    15,899.58x = 193,632,889.49
  5. Step 5: Solve for x
    x = 193,632,889.49/15,899.58
  6. Step 6: Final answer
    x = 12,178.49

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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.