Home / 11,879.20-17,818.80-6,349.60

Finding the Fourth Proportional to 11,879.20, 17,818.80 and 6,349.60

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Solution

The fourth proportional to 11,879.20, 17,818.80 and 6,349.60 is: 9,524.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.20 : 17,818.80 = 6,349.60 : x
  2. Step 2: Convert to fraction form
    11,879.20/17,818.80 = 6,349.60/x
  3. Step 3: Cross multiply
    11,879.20x = 17,818.80 × 6,349.60
  4. Step 4: Simplify right side
    11,879.20x = 113,142,252.48
  5. Step 5: Solve for x
    x = 113,142,252.48/11,879.20
  6. Step 6: Final answer
    x = 9,524.40

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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.