Home / 20,136.56-27,788.10-11,183.72

Finding the Fourth Proportional to 20,136.56, 27,788.10 and 11,183.72

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Solution

The fourth proportional to 20,136.56, 27,788.10 and 11,183.72 is: 15,433.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.56 : 27,788.10 = 11,183.72 : x
  2. Step 2: Convert to fraction form
    20,136.56/27,788.10 = 11,183.72/x
  3. Step 3: Cross multiply
    20,136.56x = 27,788.10 × 11,183.72
  4. Step 4: Simplify right side
    20,136.56x = 310,774,329.73
  5. Step 5: Solve for x
    x = 310,774,329.73/20,136.56
  6. Step 6: Final answer
    x = 15,433.34

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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.