Home / 13,885.80-20,928.66-11,961.24

Finding the Fourth Proportional to 13,885.80, 20,928.66 and 11,961.24

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Solution

The fourth proportional to 13,885.80, 20,928.66 and 11,961.24 is: 18,027.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.80 : 20,928.66 = 11,961.24 : x
  2. Step 2: Convert to fraction form
    13,885.80/20,928.66 = 11,961.24/x
  3. Step 3: Cross multiply
    13,885.80x = 20,928.66 × 11,961.24
  4. Step 4: Simplify right side
    13,885.80x = 250,332,725.14
  5. Step 5: Solve for x
    x = 250,332,725.14/13,885.80
  6. Step 6: Final answer
    x = 18,027.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.