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Finding the Fourth Proportional to 18,067.89, 27,099.89 and 4,742.22

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Solution

The fourth proportional to 18,067.89, 27,099.89 and 4,742.22 is: 7,112.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,067.89 : 27,099.89 = 4,742.22 : x
  2. Step 2: Convert to fraction form
    18,067.89/27,099.89 = 4,742.22/x
  3. Step 3: Cross multiply
    18,067.89x = 27,099.89 × 4,742.22
  4. Step 4: Simplify right side
    18,067.89x = 128,513,753.84
  5. Step 5: Solve for x
    x = 128,513,753.84/18,067.89
  6. Step 6: Final answer
    x = 7,112.82

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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.