Home / 14,144.82-19,520.45-7,857.20

Finding the Fourth Proportional to 14,144.82, 19,520.45 and 7,857.20

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Solution

The fourth proportional to 14,144.82, 19,520.45 and 7,857.20 is: 10,843.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,144.82 : 19,520.45 = 7,857.20 : x
  2. Step 2: Convert to fraction form
    14,144.82/19,520.45 = 7,857.20/x
  3. Step 3: Cross multiply
    14,144.82x = 19,520.45 × 7,857.20
  4. Step 4: Simplify right side
    14,144.82x = 153,375,942.85
  5. Step 5: Solve for x
    x = 153,375,942.85/14,144.82
  6. Step 6: Final answer
    x = 10,843.26

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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.