Home / 11,920.75-16,450.68-6,616.33

Finding the Fourth Proportional to 11,920.75, 16,450.68 and 6,616.33

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Solution

The fourth proportional to 11,920.75, 16,450.68 and 6,616.33 is: 9,130.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.75 : 16,450.68 = 6,616.33 : x
  2. Step 2: Convert to fraction form
    11,920.75/16,450.68 = 6,616.33/x
  3. Step 3: Cross multiply
    11,920.75x = 16,450.68 × 6,616.33
  4. Step 4: Simplify right side
    11,920.75x = 108,843,127.60
  5. Step 5: Solve for x
    x = 108,843,127.60/11,920.75
  6. Step 6: Final answer
    x = 9,130.56

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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.