Home / 13,845.53-20,768.30-3,984.90

Finding the Fourth Proportional to 13,845.53, 20,768.30 and 3,984.90

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Solution

The fourth proportional to 13,845.53, 20,768.30 and 3,984.90 is: 5,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.53 : 20,768.30 = 3,984.90 : x
  2. Step 2: Convert to fraction form
    13,845.53/20,768.30 = 3,984.90/x
  3. Step 3: Cross multiply
    13,845.53x = 20,768.30 × 3,984.90
  4. Step 4: Simplify right side
    13,845.53x = 82,759,515.81
  5. Step 5: Solve for x
    x = 82,759,515.81/13,845.53
  6. Step 6: Final answer
    x = 5,977.34

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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.