Home / 12,913.43-19,378.34-5,517.95

Finding the Fourth Proportional to 12,913.43, 19,378.34 and 5,517.95

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Solution

The fourth proportional to 12,913.43, 19,378.34 and 5,517.95 is: 8,280.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.43 : 19,378.34 = 5,517.95 : x
  2. Step 2: Convert to fraction form
    12,913.43/19,378.34 = 5,517.95/x
  3. Step 3: Cross multiply
    12,913.43x = 19,378.34 × 5,517.95
  4. Step 4: Simplify right side
    12,913.43x = 106,928,586.72
  5. Step 5: Solve for x
    x = 106,928,586.72/12,913.43
  6. Step 6: Final answer
    x = 8,280.42

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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.