Home / 13,996.90-20,990.46-4,133.56

Finding the Fourth Proportional to 13,996.90, 20,990.46 and 4,133.56

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Solution

The fourth proportional to 13,996.90, 20,990.46 and 4,133.56 is: 6,198.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,996.90 : 20,990.46 = 4,133.56 : x
  2. Step 2: Convert to fraction form
    13,996.90/20,990.46 = 4,133.56/x
  3. Step 3: Cross multiply
    13,996.90x = 20,990.46 × 4,133.56
  4. Step 4: Simplify right side
    13,996.90x = 86,765,325.84
  5. Step 5: Solve for x
    x = 86,765,325.84/13,996.90
  6. Step 6: Final answer
    x = 6,198.90

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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.