Home / 12,911.88-19,371.06-3,677.88

Finding the Fourth Proportional to 12,911.88, 19,371.06 and 3,677.88

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Solution

The fourth proportional to 12,911.88, 19,371.06 and 3,677.88 is: 5,517.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.88 : 19,371.06 = 3,677.88 : x
  2. Step 2: Convert to fraction form
    12,911.88/19,371.06 = 3,677.88/x
  3. Step 3: Cross multiply
    12,911.88x = 19,371.06 × 3,677.88
  4. Step 4: Simplify right side
    12,911.88x = 71,244,434.15
  5. Step 5: Solve for x
    x = 71,244,434.15/12,911.88
  6. Step 6: Final answer
    x = 5,517.74

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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.