Home / 13,629.17-20,443.70-3,768.42

Finding the Fourth Proportional to 13,629.17, 20,443.70 and 3,768.42

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Solution

The fourth proportional to 13,629.17, 20,443.70 and 3,768.42 is: 5,652.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.17 : 20,443.70 = 3,768.42 : x
  2. Step 2: Convert to fraction form
    13,629.17/20,443.70 = 3,768.42/x
  3. Step 3: Cross multiply
    13,629.17x = 20,443.70 × 3,768.42
  4. Step 4: Simplify right side
    13,629.17x = 77,040,429.11
  5. Step 5: Solve for x
    x = 77,040,429.11/13,629.17
  6. Step 6: Final answer
    x = 5,652.62

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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.