Home / 20,135.50-27,787.77-11,183.68

Finding the Fourth Proportional to 20,135.50, 27,787.77 and 11,183.68

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Solution

The fourth proportional to 20,135.50, 27,787.77 and 11,183.68 is: 15,433.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.50 : 27,787.77 = 11,183.68 : x
  2. Step 2: Convert to fraction form
    20,135.50/27,787.77 = 11,183.68/x
  3. Step 3: Cross multiply
    20,135.50x = 27,787.77 × 11,183.68
  4. Step 4: Simplify right side
    20,135.50x = 310,769,527.59
  5. Step 5: Solve for x
    x = 310,769,527.59/20,135.50
  6. Step 6: Final answer
    x = 15,433.91

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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.