Home / 11,991.82-16,525.33-8,628.70

Finding the Fourth Proportional to 11,991.82, 16,525.33 and 8,628.70

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Solution

The fourth proportional to 11,991.82, 16,525.33 and 8,628.70 is: 11,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.82 : 16,525.33 = 8,628.70 : x
  2. Step 2: Convert to fraction form
    11,991.82/16,525.33 = 8,628.70/x
  3. Step 3: Cross multiply
    11,991.82x = 16,525.33 × 8,628.70
  4. Step 4: Simplify right side
    11,991.82x = 142,592,114.97
  5. Step 5: Solve for x
    x = 142,592,114.97/11,991.82
  6. Step 6: Final answer
    x = 11,890.78

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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.