Home / 13,704.12-20,556.18-3,315.87

Finding the Fourth Proportional to 13,704.12, 20,556.18 and 3,315.87

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Solution

The fourth proportional to 13,704.12, 20,556.18 and 3,315.87 is: 4,973.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.12 : 20,556.18 = 3,315.87 : x
  2. Step 2: Convert to fraction form
    13,704.12/20,556.18 = 3,315.87/x
  3. Step 3: Cross multiply
    13,704.12x = 20,556.18 × 3,315.87
  4. Step 4: Simplify right side
    13,704.12x = 68,161,620.58
  5. Step 5: Solve for x
    x = 68,161,620.58/13,704.12
  6. Step 6: Final answer
    x = 4,973.81

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1.5x scale

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.