Home / 13,414.40-20,121.60-11,567.60

Finding the Fourth Proportional to 13,414.40, 20,121.60 and 11,567.60

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Solution

The fourth proportional to 13,414.40, 20,121.60 and 11,567.60 is: 17,351.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,414.40 : 20,121.60 = 11,567.60 : x
  2. Step 2: Convert to fraction form
    13,414.40/20,121.60 = 11,567.60/x
  3. Step 3: Cross multiply
    13,414.40x = 20,121.60 × 11,567.60
  4. Step 4: Simplify right side
    13,414.40x = 232,758,620.16
  5. Step 5: Solve for x
    x = 232,758,620.16/13,414.40
  6. Step 6: Final answer
    x = 17,351.40

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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.