Home / 13,745.40-20,629.03-5,427.51

Finding the Fourth Proportional to 13,745.40, 20,629.03 and 5,427.51

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Solution

The fourth proportional to 13,745.40, 20,629.03 and 5,427.51 is: 8,145.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.40 : 20,629.03 = 5,427.51 : x
  2. Step 2: Convert to fraction form
    13,745.40/20,629.03 = 5,427.51/x
  3. Step 3: Cross multiply
    13,745.40x = 20,629.03 × 5,427.51
  4. Step 4: Simplify right side
    13,745.40x = 111,964,185.86
  5. Step 5: Solve for x
    x = 111,964,185.86/13,745.40
  6. Step 6: Final answer
    x = 8,145.58

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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.