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Finding the Fourth Proportional to 11,807.81, 17,690.82 and 11,105.39

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Solution

The fourth proportional to 11,807.81, 17,690.82 and 11,105.39 is: 16,638.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,807.81 : 17,690.82 = 11,105.39 : x
  2. Step 2: Convert to fraction form
    11,807.81/17,690.82 = 11,105.39/x
  3. Step 3: Cross multiply
    11,807.81x = 17,690.82 × 11,105.39
  4. Step 4: Simplify right side
    11,807.81x = 196,463,367.07
  5. Step 5: Solve for x
    x = 196,463,367.07/11,807.81
  6. Step 6: Final answer
    x = 16,638.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.