Home / 13,704.99-18,896.45-11,688.09

Finding the Fourth Proportional to 13,704.99, 18,896.45 and 11,688.09

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Solution

The fourth proportional to 13,704.99, 18,896.45 and 11,688.09 is: 16,115.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.99 : 18,896.45 = 11,688.09 : x
  2. Step 2: Convert to fraction form
    13,704.99/18,896.45 = 11,688.09/x
  3. Step 3: Cross multiply
    13,704.99x = 18,896.45 × 11,688.09
  4. Step 4: Simplify right side
    13,704.99x = 220,863,408.28
  5. Step 5: Solve for x
    x = 220,863,408.28/13,704.99
  6. Step 6: Final answer
    x = 16,115.55

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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.