Home / 13,786.44-20,667.38-6,380.72

Finding the Fourth Proportional to 13,786.44, 20,667.38 and 6,380.72

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Solution

The fourth proportional to 13,786.44, 20,667.38 and 6,380.72 is: 9,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.44 : 20,667.38 = 6,380.72 : x
  2. Step 2: Convert to fraction form
    13,786.44/20,667.38 = 6,380.72/x
  3. Step 3: Cross multiply
    13,786.44x = 20,667.38 × 6,380.72
  4. Step 4: Simplify right side
    13,786.44x = 131,872,764.91
  5. Step 5: Solve for x
    x = 131,872,764.91/13,786.44
  6. Step 6: Final answer
    x = 9,565.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.