Home / 12,845.45-19,268.58-3,485.44

Finding the Fourth Proportional to 12,845.45, 19,268.58 and 3,485.44

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Solution

The fourth proportional to 12,845.45, 19,268.58 and 3,485.44 is: 5,228.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,845.45 : 19,268.58 = 3,485.44 : x
  2. Step 2: Convert to fraction form
    12,845.45/19,268.58 = 3,485.44/x
  3. Step 3: Cross multiply
    12,845.45x = 19,268.58 × 3,485.44
  4. Step 4: Simplify right side
    12,845.45x = 67,159,431.30
  5. Step 5: Solve for x
    x = 67,159,431.30/12,845.45
  6. Step 6: Final answer
    x = 5,228.27

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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.