Home / 11,091.60-15,306.21-6,311.44

Finding the Fourth Proportional to 11,091.60, 15,306.21 and 6,311.44

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Solution

The fourth proportional to 11,091.60, 15,306.21 and 6,311.44 is: 8,709.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,091.60 : 15,306.21 = 6,311.44 : x
  2. Step 2: Convert to fraction form
    11,091.60/15,306.21 = 6,311.44/x
  3. Step 3: Cross multiply
    11,091.60x = 15,306.21 × 6,311.44
  4. Step 4: Simplify right side
    11,091.60x = 96,604,194.49
  5. Step 5: Solve for x
    x = 96,604,194.49/11,091.60
  6. Step 6: Final answer
    x = 8,709.67

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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.