Home / 13,719.40-20,622.30-12,682.60

Finding the Fourth Proportional to 13,719.40, 20,622.30 and 12,682.60

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Solution

The fourth proportional to 13,719.40, 20,622.30 and 12,682.60 is: 19,063.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.40 : 20,622.30 = 12,682.60 : x
  2. Step 2: Convert to fraction form
    13,719.40/20,622.30 = 12,682.60/x
  3. Step 3: Cross multiply
    13,719.40x = 20,622.30 × 12,682.60
  4. Step 4: Simplify right side
    13,719.40x = 261,544,381.98
  5. Step 5: Solve for x
    x = 261,544,381.98/13,719.40
  6. Step 6: Final answer
    x = 19,063.84

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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.