Home / 20,157.66-27,813.51-11,772.54

Finding the Fourth Proportional to 20,157.66, 27,813.51 and 11,772.54

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Solution

The fourth proportional to 20,157.66, 27,813.51 and 11,772.54 is: 16,243.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.66 : 27,813.51 = 11,772.54 : x
  2. Step 2: Convert to fraction form
    20,157.66/27,813.51 = 11,772.54/x
  3. Step 3: Cross multiply
    20,157.66x = 27,813.51 × 11,772.54
  4. Step 4: Simplify right side
    20,157.66x = 327,435,659.02
  5. Step 5: Solve for x
    x = 327,435,659.02/20,157.66
  6. Step 6: Final answer
    x = 16,243.73

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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.