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Finding the Fourth Proportional to 12,093.40, 18,140.22 and 7,959.64

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Solution

The fourth proportional to 12,093.40, 18,140.22 and 7,959.64 is: 11,939.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,093.40 : 18,140.22 = 7,959.64 : x
  2. Step 2: Convert to fraction form
    12,093.40/18,140.22 = 7,959.64/x
  3. Step 3: Cross multiply
    12,093.40x = 18,140.22 × 7,959.64
  4. Step 4: Simplify right side
    12,093.40x = 144,389,620.72
  5. Step 5: Solve for x
    x = 144,389,620.72/12,093.40
  6. Step 6: Final answer
    x = 11,939.54

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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.