Home / 11,307.12-16,955.20-3,909

Finding the Fourth Proportional to 11,307.12, 16,955.20 and 3,909

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Solution

The fourth proportional to 11,307.12, 16,955.20 and 3,909 is: 5,861.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,307.12 : 16,955.20 = 3,909 : x
  2. Step 2: Convert to fraction form
    11,307.12/16,955.20 = 3,909/x
  3. Step 3: Cross multiply
    11,307.12x = 16,955.20 × 3,909
  4. Step 4: Simplify right side
    11,307.12x = 66,277,876.80
  5. Step 5: Solve for x
    x = 66,277,876.80/11,307.12
  6. Step 6: Final answer
    x = 5,861.61

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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.