Home / 12,928.24-19,394.19-4,161.12

Finding the Fourth Proportional to 12,928.24, 19,394.19 and 4,161.12

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Solution

The fourth proportional to 12,928.24, 19,394.19 and 4,161.12 is: 6,242.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.24 : 19,394.19 = 4,161.12 : x
  2. Step 2: Convert to fraction form
    12,928.24/19,394.19 = 4,161.12/x
  3. Step 3: Cross multiply
    12,928.24x = 19,394.19 × 4,161.12
  4. Step 4: Simplify right side
    12,928.24x = 80,701,551.89
  5. Step 5: Solve for x
    x = 80,701,551.89/12,928.24
  6. Step 6: Final answer
    x = 6,242.27

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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.