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Finding the Fourth Proportional to 12,804.01, 19,205.91 and 3,919.32

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Solution

The fourth proportional to 12,804.01, 19,205.91 and 3,919.32 is: 5,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,804.01 : 19,205.91 = 3,919.32 : x
  2. Step 2: Convert to fraction form
    12,804.01/19,205.91 = 3,919.32/x
  3. Step 3: Cross multiply
    12,804.01x = 19,205.91 × 3,919.32
  4. Step 4: Simplify right side
    12,804.01x = 75,274,107.18
  5. Step 5: Solve for x
    x = 75,274,107.18/12,804.01
  6. Step 6: Final answer
    x = 5,878.95

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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.