Home / 13,370.40-20,055.60-4,135.20

Finding the Fourth Proportional to 13,370.40, 20,055.60 and 4,135.20

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Solution

The fourth proportional to 13,370.40, 20,055.60 and 4,135.20 is: 6,202.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.40 : 20,055.60 = 4,135.20 : x
  2. Step 2: Convert to fraction form
    13,370.40/20,055.60 = 4,135.20/x
  3. Step 3: Cross multiply
    13,370.40x = 20,055.60 × 4,135.20
  4. Step 4: Simplify right side
    13,370.40x = 82,933,917.12
  5. Step 5: Solve for x
    x = 82,933,917.12/13,370.40
  6. Step 6: Final answer
    x = 6,202.80

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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.