Home / 13,355.40-20,033.10-4,120.20

Finding the Fourth Proportional to 13,355.40, 20,033.10 and 4,120.20

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Solution

The fourth proportional to 13,355.40, 20,033.10 and 4,120.20 is: 6,180.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.40 : 20,033.10 = 4,120.20 : x
  2. Step 2: Convert to fraction form
    13,355.40/20,033.10 = 4,120.20/x
  3. Step 3: Cross multiply
    13,355.40x = 20,033.10 × 4,120.20
  4. Step 4: Simplify right side
    13,355.40x = 82,540,378.62
  5. Step 5: Solve for x
    x = 82,540,378.62/13,355.40
  6. Step 6: Final answer
    x = 6,180.30

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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.