Home / 11,997.70-16,556.16-6,619.96

Finding the Fourth Proportional to 11,997.70, 16,556.16 and 6,619.96

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Solution

The fourth proportional to 11,997.70, 16,556.16 and 6,619.96 is: 9,135.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,997.70 : 16,556.16 = 6,619.96 : x
  2. Step 2: Convert to fraction form
    11,997.70/16,556.16 = 6,619.96/x
  3. Step 3: Cross multiply
    11,997.70x = 16,556.16 × 6,619.96
  4. Step 4: Simplify right side
    11,997.70x = 109,601,116.95
  5. Step 5: Solve for x
    x = 109,601,116.95/11,997.70
  6. Step 6: Final answer
    x = 9,135.18

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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.