Home / 11,811.21-16,299.25-6,505.98

Finding the Fourth Proportional to 11,811.21, 16,299.25 and 6,505.98

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Solution

The fourth proportional to 11,811.21, 16,299.25 and 6,505.98 is: 8,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.21 : 16,299.25 = 6,505.98 : x
  2. Step 2: Convert to fraction form
    11,811.21/16,299.25 = 6,505.98/x
  3. Step 3: Cross multiply
    11,811.21x = 16,299.25 × 6,505.98
  4. Step 4: Simplify right side
    11,811.21x = 106,042,594.52
  5. Step 5: Solve for x
    x = 106,042,594.52/11,811.21
  6. Step 6: Final answer
    x = 8,978.13

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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.