Home / 20,850.93-31,282.26-8,379.72

Finding the Fourth Proportional to 20,850.93, 31,282.26 and 8,379.72

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Solution

The fourth proportional to 20,850.93, 31,282.26 and 8,379.72 is: 12,571.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.93 : 31,282.26 = 8,379.72 : x
  2. Step 2: Convert to fraction form
    20,850.93/31,282.26 = 8,379.72/x
  3. Step 3: Cross multiply
    20,850.93x = 31,282.26 × 8,379.72
  4. Step 4: Simplify right side
    20,850.93x = 262,136,579.77
  5. Step 5: Solve for x
    x = 262,136,579.77/20,850.93
  6. Step 6: Final answer
    x = 12,571.94

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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.