Home / 13,893.80-20,840.70-3,505.55

Finding the Fourth Proportional to 13,893.80, 20,840.70 and 3,505.55

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Solution

The fourth proportional to 13,893.80, 20,840.70 and 3,505.55 is: 5,258.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,893.80 : 20,840.70 = 3,505.55 : x
  2. Step 2: Convert to fraction form
    13,893.80/20,840.70 = 3,505.55/x
  3. Step 3: Cross multiply
    13,893.80x = 20,840.70 × 3,505.55
  4. Step 4: Simplify right side
    13,893.80x = 73,058,115.89
  5. Step 5: Solve for x
    x = 73,058,115.89/13,893.80
  6. Step 6: Final answer
    x = 5,258.33

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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.