Home / 11,922.80-16,450.49-6,616.28

Finding the Fourth Proportional to 11,922.80, 16,450.49 and 6,616.28

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Solution

The fourth proportional to 11,922.80, 16,450.49 and 6,616.28 is: 9,128.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,922.80 : 16,450.49 = 6,616.28 : x
  2. Step 2: Convert to fraction form
    11,922.80/16,450.49 = 6,616.28/x
  3. Step 3: Cross multiply
    11,922.80x = 16,450.49 × 6,616.28
  4. Step 4: Simplify right side
    11,922.80x = 108,841,105.64
  5. Step 5: Solve for x
    x = 108,841,105.64/11,922.80
  6. Step 6: Final answer
    x = 9,128.82

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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.