Home / 10,815.67-16,226.38-3,420.26

Finding the Fourth Proportional to 10,815.67, 16,226.38 and 3,420.26

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Solution

The fourth proportional to 10,815.67, 16,226.38 and 3,420.26 is: 5,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.67 : 16,226.38 = 3,420.26 : x
  2. Step 2: Convert to fraction form
    10,815.67/16,226.38 = 3,420.26/x
  3. Step 3: Cross multiply
    10,815.67x = 16,226.38 × 3,420.26
  4. Step 4: Simplify right side
    10,815.67x = 55,498,438.46
  5. Step 5: Solve for x
    x = 55,498,438.46/10,815.67
  6. Step 6: Final answer
    x = 5,131.30

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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.