Home / 13,175.20-19,762.80-3,815.20

Finding the Fourth Proportional to 13,175.20, 19,762.80 and 3,815.20

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Solution

The fourth proportional to 13,175.20, 19,762.80 and 3,815.20 is: 5,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.20 : 19,762.80 = 3,815.20 : x
  2. Step 2: Convert to fraction form
    13,175.20/19,762.80 = 3,815.20/x
  3. Step 3: Cross multiply
    13,175.20x = 19,762.80 × 3,815.20
  4. Step 4: Simplify right side
    13,175.20x = 75,399,034.56
  5. Step 5: Solve for x
    x = 75,399,034.56/13,175.20
  6. Step 6: Final answer
    x = 5,722.80

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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.