Home / 12,136.27-18,181.06-7,442.58

Finding the Fourth Proportional to 12,136.27, 18,181.06 and 7,442.58

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Solution

The fourth proportional to 12,136.27, 18,181.06 and 7,442.58 is: 11,149.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.27 : 18,181.06 = 7,442.58 : x
  2. Step 2: Convert to fraction form
    12,136.27/18,181.06 = 7,442.58/x
  3. Step 3: Cross multiply
    12,136.27x = 18,181.06 × 7,442.58
  4. Step 4: Simplify right side
    12,136.27x = 135,313,993.53
  5. Step 5: Solve for x
    x = 135,313,993.53/12,136.27
  6. Step 6: Final answer
    x = 11,149.55

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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.