Home / 20,015.50-27,621.39-11,183.50

Finding the Fourth Proportional to 20,015.50, 27,621.39 and 11,183.50

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Solution

The fourth proportional to 20,015.50, 27,621.39 and 11,183.50 is: 15,433.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,015.50 : 27,621.39 = 11,183.50 : x
  2. Step 2: Convert to fraction form
    20,015.50/27,621.39 = 11,183.50/x
  3. Step 3: Cross multiply
    20,015.50x = 27,621.39 × 11,183.50
  4. Step 4: Simplify right side
    20,015.50x = 308,903,815.07
  5. Step 5: Solve for x
    x = 308,903,815.07/20,015.50
  6. Step 6: Final answer
    x = 15,433.23

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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.