Home / 13,629.47-20,445.21-3,768.73

Finding the Fourth Proportional to 13,629.47, 20,445.21 and 3,768.73

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Solution

The fourth proportional to 13,629.47, 20,445.21 and 3,768.73 is: 5,653.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.47 : 20,445.21 = 3,768.73 : x
  2. Step 2: Convert to fraction form
    13,629.47/20,445.21 = 3,768.73/x
  3. Step 3: Cross multiply
    13,629.47x = 20,445.21 × 3,768.73
  4. Step 4: Simplify right side
    13,629.47x = 77,052,425.17
  5. Step 5: Solve for x
    x = 77,052,425.17/13,629.47
  6. Step 6: Final answer
    x = 5,653.37

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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.