Home / 13,381.08-18,469.74-8,075

Finding the Fourth Proportional to 13,381.08, 18,469.74 and 8,075

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Solution

The fourth proportional to 13,381.08, 18,469.74 and 8,075 is: 11,145.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.08 : 18,469.74 = 8,075 : x
  2. Step 2: Convert to fraction form
    13,381.08/18,469.74 = 8,075/x
  3. Step 3: Cross multiply
    13,381.08x = 18,469.74 × 8,075
  4. Step 4: Simplify right side
    13,381.08x = 149,143,150.50
  5. Step 5: Solve for x
    x = 149,143,150.50/13,381.08
  6. Step 6: Final answer
    x = 11,145.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.