Home / 12,913.08-19,372.82-3,679

Finding the Fourth Proportional to 12,913.08, 19,372.82 and 3,679

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Solution

The fourth proportional to 12,913.08, 19,372.82 and 3,679 is: 5,519.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.08 : 19,372.82 = 3,679 : x
  2. Step 2: Convert to fraction form
    12,913.08/19,372.82 = 3,679/x
  3. Step 3: Cross multiply
    12,913.08x = 19,372.82 × 3,679
  4. Step 4: Simplify right side
    12,913.08x = 71,272,604.78
  5. Step 5: Solve for x
    x = 71,272,604.78/12,913.08
  6. Step 6: Final answer
    x = 5,519.41

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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.