Home / 11,321.78-16,983.58-4,305.15

Finding the Fourth Proportional to 11,321.78, 16,983.58 and 4,305.15

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Solution

The fourth proportional to 11,321.78, 16,983.58 and 4,305.15 is: 6,458.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.78 : 16,983.58 = 4,305.15 : x
  2. Step 2: Convert to fraction form
    11,321.78/16,983.58 = 4,305.15/x
  3. Step 3: Cross multiply
    11,321.78x = 16,983.58 × 4,305.15
  4. Step 4: Simplify right side
    11,321.78x = 73,116,859.44
  5. Step 5: Solve for x
    x = 73,116,859.44/11,321.78
  6. Step 6: Final answer
    x = 6,458.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.