Home / 12,647.72-17,450.46-8,169.84

Finding the Fourth Proportional to 12,647.72, 17,450.46 and 8,169.84

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Solution

The fourth proportional to 12,647.72, 17,450.46 and 8,169.84 is: 11,272.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.72 : 17,450.46 = 8,169.84 : x
  2. Step 2: Convert to fraction form
    12,647.72/17,450.46 = 8,169.84/x
  3. Step 3: Cross multiply
    12,647.72x = 17,450.46 × 8,169.84
  4. Step 4: Simplify right side
    12,647.72x = 142,567,466.13
  5. Step 5: Solve for x
    x = 142,567,466.13/12,647.72
  6. Step 6: Final answer
    x = 11,272.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.