Home / 11,768.61-16,240.63-6,391.00

Finding the Fourth Proportional to 11,768.61, 16,240.63 and 6,391.00

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Solution

The fourth proportional to 11,768.61, 16,240.63 and 6,391.00 is: 8,819.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,768.61 : 16,240.63 = 6,391.00 : x
  2. Step 2: Convert to fraction form
    11,768.61/16,240.63 = 6,391.00/x
  3. Step 3: Cross multiply
    11,768.61x = 16,240.63 × 6,391.00
  4. Step 4: Simplify right side
    11,768.61x = 103,793,906.37
  5. Step 5: Solve for x
    x = 103,793,906.37/11,768.61
  6. Step 6: Final answer
    x = 8,819.56

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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.