Home / 11,768.59-16,240.58-6,390.97

Finding the Fourth Proportional to 11,768.59, 16,240.58 and 6,390.97

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Solution

The fourth proportional to 11,768.59, 16,240.58 and 6,390.97 is: 8,819.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,768.59 : 16,240.58 = 6,390.97 : x
  2. Step 2: Convert to fraction form
    11,768.59/16,240.58 = 6,390.97/x
  3. Step 3: Cross multiply
    11,768.59x = 16,240.58 × 6,390.97
  4. Step 4: Simplify right side
    11,768.59x = 103,793,138.27
  5. Step 5: Solve for x
    x = 103,793,138.27/11,768.59
  6. Step 6: Final answer
    x = 8,819.51

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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.