Home / 20,136.57-27,790.65-12,183.18

Finding the Fourth Proportional to 20,136.57, 27,790.65 and 12,183.18

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Solution

The fourth proportional to 20,136.57, 27,790.65 and 12,183.18 is: 16,814.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.57 : 27,790.65 = 12,183.18 : x
  2. Step 2: Convert to fraction form
    20,136.57/27,790.65 = 12,183.18/x
  3. Step 3: Cross multiply
    20,136.57x = 27,790.65 × 12,183.18
  4. Step 4: Simplify right side
    20,136.57x = 338,578,491.27
  5. Step 5: Solve for x
    x = 338,578,491.27/20,136.57
  6. Step 6: Final answer
    x = 16,814.11

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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.