Home / 10,815.75-16,225.38-4,238.37

Finding the Fourth Proportional to 10,815.75, 16,225.38 and 4,238.37

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Solution

The fourth proportional to 10,815.75, 16,225.38 and 4,238.37 is: 6,358.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.75 : 16,225.38 = 4,238.37 : x
  2. Step 2: Convert to fraction form
    10,815.75/16,225.38 = 4,238.37/x
  3. Step 3: Cross multiply
    10,815.75x = 16,225.38 × 4,238.37
  4. Step 4: Simplify right side
    10,815.75x = 68,769,163.83
  5. Step 5: Solve for x
    x = 68,769,163.83/10,815.75
  6. Step 6: Final answer
    x = 6,358.24

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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.