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Finding the Fourth Proportional to 11,351.73, 16,964.87 and 8,396.45

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Solution

The fourth proportional to 11,351.73, 16,964.87 and 8,396.45 is: 12,548.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,351.73 : 16,964.87 = 8,396.45 : x
  2. Step 2: Convert to fraction form
    11,351.73/16,964.87 = 8,396.45/x
  3. Step 3: Cross multiply
    11,351.73x = 16,964.87 × 8,396.45
  4. Step 4: Simplify right side
    11,351.73x = 142,444,682.71
  5. Step 5: Solve for x
    x = 142,444,682.71/11,351.73
  6. Step 6: Final answer
    x = 12,548.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.