Home / 13,686.14-20,529.22-3,297.90

Finding the Fourth Proportional to 13,686.14, 20,529.22 and 3,297.90

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Solution

The fourth proportional to 13,686.14, 20,529.22 and 3,297.90 is: 4,946.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.14 : 20,529.22 = 3,297.90 : x
  2. Step 2: Convert to fraction form
    13,686.14/20,529.22 = 3,297.90/x
  3. Step 3: Cross multiply
    13,686.14x = 20,529.22 × 3,297.90
  4. Step 4: Simplify right side
    13,686.14x = 67,703,314.64
  5. Step 5: Solve for x
    x = 67,703,314.64/13,686.14
  6. Step 6: Final answer
    x = 4,946.85

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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.