Home / 11,768.56-16,240.55-6,390.94

Finding the Fourth Proportional to 11,768.56, 16,240.55 and 6,390.94

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Solution

The fourth proportional to 11,768.56, 16,240.55 and 6,390.94 is: 8,819.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,768.56 : 16,240.55 = 6,390.94 : x
  2. Step 2: Convert to fraction form
    11,768.56/16,240.55 = 6,390.94/x
  3. Step 3: Cross multiply
    11,768.56x = 16,240.55 × 6,390.94
  4. Step 4: Simplify right side
    11,768.56x = 103,792,380.62
  5. Step 5: Solve for x
    x = 103,792,380.62/11,768.56
  6. Step 6: Final answer
    x = 8,819.46

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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.