Home / 18,198.90-25,115.63-11,029.44

Finding the Fourth Proportional to 18,198.90, 25,115.63 and 11,029.44

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Solution

The fourth proportional to 18,198.90, 25,115.63 and 11,029.44 is: 15,221.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,198.90 : 25,115.63 = 11,029.44 : x
  2. Step 2: Convert to fraction form
    18,198.90/25,115.63 = 11,029.44/x
  3. Step 3: Cross multiply
    18,198.90x = 25,115.63 × 11,029.44
  4. Step 4: Simplify right side
    18,198.90x = 277,011,334.15
  5. Step 5: Solve for x
    x = 277,011,334.15/18,198.90
  6. Step 6: Final answer
    x = 15,221.32

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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.