Home / 13,682.36-20,520.56-3,686.87

Finding the Fourth Proportional to 13,682.36, 20,520.56 and 3,686.87

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Solution

The fourth proportional to 13,682.36, 20,520.56 and 3,686.87 is: 5,529.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,682.36 : 20,520.56 = 3,686.87 : x
  2. Step 2: Convert to fraction form
    13,682.36/20,520.56 = 3,686.87/x
  3. Step 3: Cross multiply
    13,682.36x = 20,520.56 × 3,686.87
  4. Step 4: Simplify right side
    13,682.36x = 75,656,516.01
  5. Step 5: Solve for x
    x = 75,656,516.01/13,682.36
  6. Step 6: Final answer
    x = 5,529.50

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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.