Home / 12,072.69-18,107.49-4,672.09

Finding the Fourth Proportional to 12,072.69, 18,107.49 and 4,672.09

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Solution

The fourth proportional to 12,072.69, 18,107.49 and 4,672.09 is: 7,007.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.69 : 18,107.49 = 4,672.09 : x
  2. Step 2: Convert to fraction form
    12,072.69/18,107.49 = 4,672.09/x
  3. Step 3: Cross multiply
    12,072.69x = 18,107.49 × 4,672.09
  4. Step 4: Simplify right side
    12,072.69x = 84,599,732.42
  5. Step 5: Solve for x
    x = 84,599,732.42/12,072.69
  6. Step 6: Final answer
    x = 7,007.53

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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.