Home / 20,914.42-28,861.25-11,353.85

Finding the Fourth Proportional to 20,914.42, 28,861.25 and 11,353.85

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Solution

The fourth proportional to 20,914.42, 28,861.25 and 11,353.85 is: 15,667.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.42 : 28,861.25 = 11,353.85 : x
  2. Step 2: Convert to fraction form
    20,914.42/28,861.25 = 11,353.85/x
  3. Step 3: Cross multiply
    20,914.42x = 28,861.25 × 11,353.85
  4. Step 4: Simplify right side
    20,914.42x = 327,686,246.54
  5. Step 5: Solve for x
    x = 327,686,246.54/20,914.42
  6. Step 6: Final answer
    x = 15,667.96

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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.