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Finding the Fourth Proportional to 19,893.36, 29,853.36 and 11,136

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Solution

The fourth proportional to 19,893.36, 29,853.36 and 11,136 is: 16,711.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,893.36 : 29,853.36 = 11,136 : x
  2. Step 2: Convert to fraction form
    19,893.36/29,853.36 = 11,136/x
  3. Step 3: Cross multiply
    19,893.36x = 29,853.36 × 11,136
  4. Step 4: Simplify right side
    19,893.36x = 332,447,016.96
  5. Step 5: Solve for x
    x = 332,447,016.96/19,893.36
  6. Step 6: Final answer
    x = 16,711.46

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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.