Home / 11,921.62-16,450.77-6,616.57

Finding the Fourth Proportional to 11,921.62, 16,450.77 and 6,616.57

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Solution

The fourth proportional to 11,921.62, 16,450.77 and 6,616.57 is: 9,130.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.62 : 16,450.77 = 6,616.57 : x
  2. Step 2: Convert to fraction form
    11,921.62/16,450.77 = 6,616.57/x
  3. Step 3: Cross multiply
    11,921.62x = 16,450.77 × 6,616.57
  4. Step 4: Simplify right side
    11,921.62x = 108,847,671.26
  5. Step 5: Solve for x
    x = 108,847,671.26/11,921.62
  6. Step 6: Final answer
    x = 9,130.28

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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.