Home / 8,681.21-13,021.83-2,107.38

Finding the Fourth Proportional to 8,681.21, 13,021.83 and 2,107.38

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Solution

The fourth proportional to 8,681.21, 13,021.83 and 2,107.38 is: 3,161.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.21 : 13,021.83 = 2,107.38 : x
  2. Step 2: Convert to fraction form
    8,681.21/13,021.83 = 2,107.38/x
  3. Step 3: Cross multiply
    8,681.21x = 13,021.83 × 2,107.38
  4. Step 4: Simplify right side
    8,681.21x = 27,441,933.57
  5. Step 5: Solve for x
    x = 27,441,933.57/8,681.21
  6. Step 6: Final answer
    x = 3,161.07

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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.