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Finding the Fourth Proportional to 11,616.69, 16,018.79 and 8,256

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Solution

The fourth proportional to 11,616.69, 16,018.79 and 8,256 is: 11,384.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,616.69 : 16,018.79 = 8,256 : x
  2. Step 2: Convert to fraction form
    11,616.69/16,018.79 = 8,256/x
  3. Step 3: Cross multiply
    11,616.69x = 16,018.79 × 8,256
  4. Step 4: Simplify right side
    11,616.69x = 132,251,088.96
  5. Step 5: Solve for x
    x = 132,251,088.96/11,616.69
  6. Step 6: Final answer
    x = 11,384.58

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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.