Home / 11,811.36-16,299.78-6,506.20

Finding the Fourth Proportional to 11,811.36, 16,299.78 and 6,506.20

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Solution

The fourth proportional to 11,811.36, 16,299.78 and 6,506.20 is: 8,978.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.36 : 16,299.78 = 6,506.20 : x
  2. Step 2: Convert to fraction form
    11,811.36/16,299.78 = 6,506.20/x
  3. Step 3: Cross multiply
    11,811.36x = 16,299.78 × 6,506.20
  4. Step 4: Simplify right side
    11,811.36x = 106,049,628.64
  5. Step 5: Solve for x
    x = 106,049,628.64/11,811.36
  6. Step 6: Final answer
    x = 8,978.61

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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.