Home / 13,172.30-19,758.49-3,311.52

Finding the Fourth Proportional to 13,172.30, 19,758.49 and 3,311.52

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Solution

The fourth proportional to 13,172.30, 19,758.49 and 3,311.52 is: 4,967.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.30 : 19,758.49 = 3,311.52 : x
  2. Step 2: Convert to fraction form
    13,172.30/19,758.49 = 3,311.52/x
  3. Step 3: Cross multiply
    13,172.30x = 19,758.49 × 3,311.52
  4. Step 4: Simplify right side
    13,172.30x = 65,430,634.80
  5. Step 5: Solve for x
    x = 65,430,634.80/13,172.30
  6. Step 6: Final answer
    x = 4,967.29

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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.