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Finding the Fourth Proportional to 13,380.48, 20,073.96 and 4,020.48

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Solution

The fourth proportional to 13,380.48, 20,073.96 and 4,020.48 is: 6,031.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.48 : 20,073.96 = 4,020.48 : x
  2. Step 2: Convert to fraction form
    13,380.48/20,073.96 = 4,020.48/x
  3. Step 3: Cross multiply
    13,380.48x = 20,073.96 × 4,020.48
  4. Step 4: Simplify right side
    13,380.48x = 80,706,954.70
  5. Step 5: Solve for x
    x = 80,706,954.70/13,380.48
  6. Step 6: Final answer
    x = 6,031.69

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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.