Home / 13,982.14-20,974.02-4,121.74

Finding the Fourth Proportional to 13,982.14, 20,974.02 and 4,121.74

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Solution

The fourth proportional to 13,982.14, 20,974.02 and 4,121.74 is: 6,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.14 : 20,974.02 = 4,121.74 : x
  2. Step 2: Convert to fraction form
    13,982.14/20,974.02 = 4,121.74/x
  3. Step 3: Cross multiply
    13,982.14x = 20,974.02 × 4,121.74
  4. Step 4: Simplify right side
    13,982.14x = 86,449,457.19
  5. Step 5: Solve for x
    x = 86,449,457.19/13,982.14
  6. Step 6: Final answer
    x = 6,182.85

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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.