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Finding the Fourth Proportional to 11,485.77, 15,846.89 and 6,449.46

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Solution

The fourth proportional to 11,485.77, 15,846.89 and 6,449.46 is: 8,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,485.77 : 15,846.89 = 6,449.46 : x
  2. Step 2: Convert to fraction form
    11,485.77/15,846.89 = 6,449.46/x
  3. Step 3: Cross multiply
    11,485.77x = 15,846.89 × 6,449.46
  4. Step 4: Simplify right side
    11,485.77x = 102,203,850.93
  5. Step 5: Solve for x
    x = 102,203,850.93/11,485.77
  6. Step 6: Final answer
    x = 8,898.30

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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.