Home / 12,136.43-18,206.78-5,020.65

Finding the Fourth Proportional to 12,136.43, 18,206.78 and 5,020.65

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Solution

The fourth proportional to 12,136.43, 18,206.78 and 5,020.65 is: 7,531.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.43 : 18,206.78 = 5,020.65 : x
  2. Step 2: Convert to fraction form
    12,136.43/18,206.78 = 5,020.65/x
  3. Step 3: Cross multiply
    12,136.43x = 18,206.78 × 5,020.65
  4. Step 4: Simplify right side
    12,136.43x = 91,409,844.90
  5. Step 5: Solve for x
    x = 91,409,844.90/12,136.43
  6. Step 6: Final answer
    x = 7,531.86

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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.