Home / 13,621.35-20,433.20-3,760.63

Finding the Fourth Proportional to 13,621.35, 20,433.20 and 3,760.63

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Solution

The fourth proportional to 13,621.35, 20,433.20 and 3,760.63 is: 5,641.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.35 : 20,433.20 = 3,760.63 : x
  2. Step 2: Convert to fraction form
    13,621.35/20,433.20 = 3,760.63/x
  3. Step 3: Cross multiply
    13,621.35x = 20,433.20 × 3,760.63
  4. Step 4: Simplify right side
    13,621.35x = 76,841,635.03
  5. Step 5: Solve for x
    x = 76,841,635.03/13,621.35
  6. Step 6: Final answer
    x = 5,641.27

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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.