Home / 20,136.41-27,787.05-11,183.69

Finding the Fourth Proportional to 20,136.41, 27,787.05 and 11,183.69

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Solution

The fourth proportional to 20,136.41, 27,787.05 and 11,183.69 is: 15,432.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.41 : 27,787.05 = 11,183.69 : x
  2. Step 2: Convert to fraction form
    20,136.41/27,787.05 = 11,183.69/x
  3. Step 3: Cross multiply
    20,136.41x = 27,787.05 × 11,183.69
  4. Step 4: Simplify right side
    20,136.41x = 310,761,753.21
  5. Step 5: Solve for x
    x = 310,761,753.21/20,136.41
  6. Step 6: Final answer
    x = 15,432.83

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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.