Home / 13,015.91-19,521.50-3,653.63

Finding the Fourth Proportional to 13,015.91, 19,521.50 and 3,653.63

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Solution

The fourth proportional to 13,015.91, 19,521.50 and 3,653.63 is: 5,479.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.91 : 19,521.50 = 3,653.63 : x
  2. Step 2: Convert to fraction form
    13,015.91/19,521.50 = 3,653.63/x
  3. Step 3: Cross multiply
    13,015.91x = 19,521.50 × 3,653.63
  4. Step 4: Simplify right side
    13,015.91x = 71,324,240.44
  5. Step 5: Solve for x
    x = 71,324,240.44/13,015.91
  6. Step 6: Final answer
    x = 5,479.78

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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.