Home / 12,850.40-19,261.20-5,453.60

Finding the Fourth Proportional to 12,850.40, 19,261.20 and 5,453.60

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Solution

The fourth proportional to 12,850.40, 19,261.20 and 5,453.60 is: 8,174.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,850.40 : 19,261.20 = 5,453.60 : x
  2. Step 2: Convert to fraction form
    12,850.40/19,261.20 = 5,453.60/x
  3. Step 3: Cross multiply
    12,850.40x = 19,261.20 × 5,453.60
  4. Step 4: Simplify right side
    12,850.40x = 105,042,880.32
  5. Step 5: Solve for x
    x = 105,042,880.32/12,850.40
  6. Step 6: Final answer
    x = 8,174.29

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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.