Home / 20,136.30-27,786.91-11,183.28

Finding the Fourth Proportional to 20,136.30, 27,786.91 and 11,183.28

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Solution

The fourth proportional to 20,136.30, 27,786.91 and 11,183.28 is: 15,432.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.30 : 27,786.91 = 11,183.28 : x
  2. Step 2: Convert to fraction form
    20,136.30/27,786.91 = 11,183.28/x
  3. Step 3: Cross multiply
    20,136.30x = 27,786.91 × 11,183.28
  4. Step 4: Simplify right side
    20,136.30x = 310,748,794.86
  5. Step 5: Solve for x
    x = 310,748,794.86/20,136.30
  6. Step 6: Final answer
    x = 15,432.27

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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.