Home / 20,452.56-28,215.72-12,892.92

Finding the Fourth Proportional to 20,452.56, 28,215.72 and 12,892.92

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Solution

The fourth proportional to 20,452.56, 28,215.72 and 12,892.92 is: 17,786.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.56 : 28,215.72 = 12,892.92 : x
  2. Step 2: Convert to fraction form
    20,452.56/28,215.72 = 12,892.92/x
  3. Step 3: Cross multiply
    20,452.56x = 28,215.72 × 12,892.92
  4. Step 4: Simplify right side
    20,452.56x = 363,783,020.70
  5. Step 5: Solve for x
    x = 363,783,020.70/20,452.56
  6. Step 6: Final answer
    x = 17,786.67

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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.