Home / 12,578.05-18,869.49-4,786.24

Finding the Fourth Proportional to 12,578.05, 18,869.49 and 4,786.24

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Solution

The fourth proportional to 12,578.05, 18,869.49 and 4,786.24 is: 7,180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.05 : 18,869.49 = 4,786.24 : x
  2. Step 2: Convert to fraction form
    12,578.05/18,869.49 = 4,786.24/x
  3. Step 3: Cross multiply
    12,578.05x = 18,869.49 × 4,786.24
  4. Step 4: Simplify right side
    12,578.05x = 90,313,907.82
  5. Step 5: Solve for x
    x = 90,313,907.82/12,578.05
  6. Step 6: Final answer
    x = 7,180.28

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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.