Home / 13,830.64-20,739.84-3,967.68

Finding the Fourth Proportional to 13,830.64, 20,739.84 and 3,967.68

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Solution

The fourth proportional to 13,830.64, 20,739.84 and 3,967.68 is: 5,949.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.64 : 20,739.84 = 3,967.68 : x
  2. Step 2: Convert to fraction form
    13,830.64/20,739.84 = 3,967.68/x
  3. Step 3: Cross multiply
    13,830.64x = 20,739.84 × 3,967.68
  4. Step 4: Simplify right side
    13,830.64x = 82,289,048.37
  5. Step 5: Solve for x
    x = 82,289,048.37/13,830.64
  6. Step 6: Final answer
    x = 5,949.76

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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.