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Finding the Fourth Proportional to 11,485.77, 15,850.97 and 6,449.73

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Solution

The fourth proportional to 11,485.77, 15,850.97 and 6,449.73 is: 8,900.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,485.77 : 15,850.97 = 6,449.73 : x
  2. Step 2: Convert to fraction form
    11,485.77/15,850.97 = 6,449.73/x
  3. Step 3: Cross multiply
    11,485.77x = 15,850.97 × 6,449.73
  4. Step 4: Simplify right side
    11,485.77x = 102,234,444.49
  5. Step 5: Solve for x
    x = 102,234,444.49/11,485.77
  6. Step 6: Final answer
    x = 8,900.97

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Half scale
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Double scale
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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.