Home / 11,920.06-16,450.80-6,616.59

Finding the Fourth Proportional to 11,920.06, 16,450.80 and 6,616.59

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Solution

The fourth proportional to 11,920.06, 16,450.80 and 6,616.59 is: 9,131.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.06 : 16,450.80 = 6,616.59 : x
  2. Step 2: Convert to fraction form
    11,920.06/16,450.80 = 6,616.59/x
  3. Step 3: Cross multiply
    11,920.06x = 16,450.80 × 6,616.59
  4. Step 4: Simplify right side
    11,920.06x = 108,848,112.27
  5. Step 5: Solve for x
    x = 108,848,112.27/11,920.06
  6. Step 6: Final answer
    x = 9,131.51

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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.