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Finding the Fourth Proportional to 18,628.22, 27,942.33 and 4,777.22

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Solution

The fourth proportional to 18,628.22, 27,942.33 and 4,777.22 is: 7,165.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.22 : 27,942.33 = 4,777.22 : x
  2. Step 2: Convert to fraction form
    18,628.22/27,942.33 = 4,777.22/x
  3. Step 3: Cross multiply
    18,628.22x = 27,942.33 × 4,777.22
  4. Step 4: Simplify right side
    18,628.22x = 133,486,727.58
  5. Step 5: Solve for x
    x = 133,486,727.58/18,628.22
  6. Step 6: Final answer
    x = 7,165.83

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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.