Home / 20,136.18-27,788.43-11,183.25

Finding the Fourth Proportional to 20,136.18, 27,788.43 and 11,183.25

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Solution

The fourth proportional to 20,136.18, 27,788.43 and 11,183.25 is: 15,433.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.18 : 27,788.43 = 11,183.25 : x
  2. Step 2: Convert to fraction form
    20,136.18/27,788.43 = 11,183.25/x
  3. Step 3: Cross multiply
    20,136.18x = 27,788.43 × 11,183.25
  4. Step 4: Simplify right side
    20,136.18x = 310,764,959.80
  5. Step 5: Solve for x
    x = 310,764,959.80/20,136.18
  6. Step 6: Final answer
    x = 15,433.16

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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.