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Finding the Fourth Proportional to 11,883.63, 16,379.84 and 8,435.41

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Solution

The fourth proportional to 11,883.63, 16,379.84 and 8,435.41 is: 11,626.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,883.63 : 16,379.84 = 8,435.41 : x
  2. Step 2: Convert to fraction form
    11,883.63/16,379.84 = 8,435.41/x
  3. Step 3: Cross multiply
    11,883.63x = 16,379.84 × 8,435.41
  4. Step 4: Simplify right side
    11,883.63x = 138,170,598.82
  5. Step 5: Solve for x
    x = 138,170,598.82/11,883.63
  6. Step 6: Final answer
    x = 11,626.97

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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.