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Finding the Fourth Proportional to 13,460.43, 20,193.90 and 4,226.43

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Solution

The fourth proportional to 13,460.43, 20,193.90 and 4,226.43 is: 6,340.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,460.43 : 20,193.90 = 4,226.43 : x
  2. Step 2: Convert to fraction form
    13,460.43/20,193.90 = 4,226.43/x
  3. Step 3: Cross multiply
    13,460.43x = 20,193.90 × 4,226.43
  4. Step 4: Simplify right side
    13,460.43x = 85,348,104.78
  5. Step 5: Solve for x
    x = 85,348,104.78/13,460.43
  6. Step 6: Final answer
    x = 6,340.67

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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.