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Finding the Fourth Proportional to 13,893.87, 20,893.73 and 11,089.11

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Solution

The fourth proportional to 13,893.87, 20,893.73 and 11,089.11 is: 16,675.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,893.87 : 20,893.73 = 11,089.11 : x
  2. Step 2: Convert to fraction form
    13,893.87/20,893.73 = 11,089.11/x
  3. Step 3: Cross multiply
    13,893.87x = 20,893.73 × 11,089.11
  4. Step 4: Simplify right side
    13,893.87x = 231,692,814.83
  5. Step 5: Solve for x
    x = 231,692,814.83/13,893.87
  6. Step 6: Final answer
    x = 16,675.90

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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.