Home / 13,621.28-20,433.10-3,760.56

Finding the Fourth Proportional to 13,621.28, 20,433.10 and 3,760.56

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Solution

The fourth proportional to 13,621.28, 20,433.10 and 3,760.56 is: 5,641.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.28 : 20,433.10 = 3,760.56 : x
  2. Step 2: Convert to fraction form
    13,621.28/20,433.10 = 3,760.56/x
  3. Step 3: Cross multiply
    13,621.28x = 20,433.10 × 3,760.56
  4. Step 4: Simplify right side
    13,621.28x = 76,839,898.54
  5. Step 5: Solve for x
    x = 76,839,898.54/13,621.28
  6. Step 6: Final answer
    x = 5,641.17

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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.