Home / 12,821.18-19,234.88-6,245.86

Finding the Fourth Proportional to 12,821.18, 19,234.88 and 6,245.86

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Solution

The fourth proportional to 12,821.18, 19,234.88 and 6,245.86 is: 9,370.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.18 : 19,234.88 = 6,245.86 : x
  2. Step 2: Convert to fraction form
    12,821.18/19,234.88 = 6,245.86/x
  3. Step 3: Cross multiply
    12,821.18x = 19,234.88 × 6,245.86
  4. Step 4: Simplify right side
    12,821.18x = 120,138,367.60
  5. Step 5: Solve for x
    x = 120,138,367.60/12,821.18
  6. Step 6: Final answer
    x = 9,370.31

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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.