Home / 13,481,348.42-18,607,721.07-8,321,745.21

Finding the Fourth Proportional to 13,481,348.42, 18,607,721.07 and 8,321,745.21

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Solution

The fourth proportional to 13,481,348.42, 18,607,721.07 and 8,321,745.21 is: 11,486,144.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481,348.42 : 18,607,721.07 = 8,321,745.21 : x
  2. Step 2: Convert to fraction form
    13,481,348.42/18,607,721.07 = 8,321,745.21/x
  3. Step 3: Cross multiply
    13,481,348.42x = 18,607,721.07 × 8,321,745.21
  4. Step 4: Simplify right side
    13,481,348.42x = 154,848,713,683,288.56
  5. Step 5: Solve for x
    x = 154,848,713,683,288.56/13,481,348.42
  6. Step 6: Final answer
    x = 11,486,144.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.