Home / 12,126.24-18,189.36-7,512.48

Finding the Fourth Proportional to 12,126.24, 18,189.36 and 7,512.48

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Solution

The fourth proportional to 12,126.24, 18,189.36 and 7,512.48 is: 11,268.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.24 : 18,189.36 = 7,512.48 : x
  2. Step 2: Convert to fraction form
    12,126.24/18,189.36 = 7,512.48/x
  3. Step 3: Cross multiply
    12,126.24x = 18,189.36 × 7,512.48
  4. Step 4: Simplify right side
    12,126.24x = 136,647,203.21
  5. Step 5: Solve for x
    x = 136,647,203.21/12,126.24
  6. Step 6: Final answer
    x = 11,268.72

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Similar ratio
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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.