Home / 12,485.44-18,735.90-9,190.36

Finding the Fourth Proportional to 12,485.44, 18,735.90 and 9,190.36

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Solution

The fourth proportional to 12,485.44, 18,735.90 and 9,190.36 is: 13,791.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.44 : 18,735.90 = 9,190.36 : x
  2. Step 2: Convert to fraction form
    12,485.44/18,735.90 = 9,190.36/x
  3. Step 3: Cross multiply
    12,485.44x = 18,735.90 × 9,190.36
  4. Step 4: Simplify right side
    12,485.44x = 172,189,665.92
  5. Step 5: Solve for x
    x = 172,189,665.92/12,485.44
  6. Step 6: Final answer
    x = 13,791.24

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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.