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Finding the Fourth Proportional to 11,879.83, 17,814.52 and 5,641.66

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Solution

The fourth proportional to 11,879.83, 17,814.52 and 5,641.66 is: 8,460.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.83 : 17,814.52 = 5,641.66 : x
  2. Step 2: Convert to fraction form
    11,879.83/17,814.52 = 5,641.66/x
  3. Step 3: Cross multiply
    11,879.83x = 17,814.52 × 5,641.66
  4. Step 4: Simplify right side
    11,879.83x = 100,503,464.90
  5. Step 5: Solve for x
    x = 100,503,464.90/11,879.83
  6. Step 6: Final answer
    x = 8,460.01

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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.