Home / 10,920.87-16,381.62-3,525.36

Finding the Fourth Proportional to 10,920.87, 16,381.62 and 3,525.36

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Solution

The fourth proportional to 10,920.87, 16,381.62 and 3,525.36 is: 5,288.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.87 : 16,381.62 = 3,525.36 : x
  2. Step 2: Convert to fraction form
    10,920.87/16,381.62 = 3,525.36/x
  3. Step 3: Cross multiply
    10,920.87x = 16,381.62 × 3,525.36
  4. Step 4: Simplify right side
    10,920.87x = 57,751,107.88
  5. Step 5: Solve for x
    x = 57,751,107.88/10,920.87
  6. Step 6: Final answer
    x = 5,288.14

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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.