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Finding the Fourth Proportional to 12,846.80, 19,271.48 and 3,486.97

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Solution

The fourth proportional to 12,846.80, 19,271.48 and 3,486.97 is: 5,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,846.80 : 19,271.48 = 3,486.97 : x
  2. Step 2: Convert to fraction form
    12,846.80/19,271.48 = 3,486.97/x
  3. Step 3: Cross multiply
    12,846.80x = 19,271.48 × 3,486.97
  4. Step 4: Simplify right side
    12,846.80x = 67,199,072.62
  5. Step 5: Solve for x
    x = 67,199,072.62/12,846.80
  6. Step 6: Final answer
    x = 5,230.80

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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.