Home / 12,142.44-16,739.46-9,161.64

Finding the Fourth Proportional to 12,142.44, 16,739.46 and 9,161.64

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Solution

The fourth proportional to 12,142.44, 16,739.46 and 9,161.64 is: 12,630.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.44 : 16,739.46 = 9,161.64 : x
  2. Step 2: Convert to fraction form
    12,142.44/16,739.46 = 9,161.64/x
  3. Step 3: Cross multiply
    12,142.44x = 16,739.46 × 9,161.64
  4. Step 4: Simplify right side
    12,142.44x = 153,360,906.31
  5. Step 5: Solve for x
    x = 153,360,906.31/12,142.44
  6. Step 6: Final answer
    x = 12,630.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.