Home / 13,231.56-18,257.22-8,455.80

Finding the Fourth Proportional to 13,231.56, 18,257.22 and 8,455.80

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Solution

The fourth proportional to 13,231.56, 18,257.22 and 8,455.80 is: 11,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.56 : 18,257.22 = 8,455.80 : x
  2. Step 2: Convert to fraction form
    13,231.56/18,257.22 = 8,455.80/x
  3. Step 3: Cross multiply
    13,231.56x = 18,257.22 × 8,455.80
  4. Step 4: Simplify right side
    13,231.56x = 154,379,400.88
  5. Step 5: Solve for x
    x = 154,379,400.88/13,231.56
  6. Step 6: Final answer
    x = 11,667.51

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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.