Home / 13,455.06-20,205.27-11,115.78

Finding the Fourth Proportional to 13,455.06, 20,205.27 and 11,115.78

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Solution

The fourth proportional to 13,455.06, 20,205.27 and 11,115.78 is: 16,692.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.06 : 20,205.27 = 11,115.78 : x
  2. Step 2: Convert to fraction form
    13,455.06/20,205.27 = 11,115.78/x
  3. Step 3: Cross multiply
    13,455.06x = 20,205.27 × 11,115.78
  4. Step 4: Simplify right side
    13,455.06x = 224,597,336.16
  5. Step 5: Solve for x
    x = 224,597,336.16/13,455.06
  6. Step 6: Final answer
    x = 16,692.41

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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.