Home / 12,729.22-19,087.58-5,231.42

Finding the Fourth Proportional to 12,729.22, 19,087.58 and 5,231.42

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Solution

The fourth proportional to 12,729.22, 19,087.58 and 5,231.42 is: 7,844.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.22 : 19,087.58 = 5,231.42 : x
  2. Step 2: Convert to fraction form
    12,729.22/19,087.58 = 5,231.42/x
  3. Step 3: Cross multiply
    12,729.22x = 19,087.58 × 5,231.42
  4. Step 4: Simplify right side
    12,729.22x = 99,855,136.98
  5. Step 5: Solve for x
    x = 99,855,136.98/12,729.22
  6. Step 6: Final answer
    x = 7,844.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.