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Finding the Fourth Proportional to 18,796.69, 28,192.59 and 7,108.39

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Solution

The fourth proportional to 18,796.69, 28,192.59 and 7,108.39 is: 10,661.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.69 : 28,192.59 = 7,108.39 : x
  2. Step 2: Convert to fraction form
    18,796.69/28,192.59 = 7,108.39/x
  3. Step 3: Cross multiply
    18,796.69x = 28,192.59 × 7,108.39
  4. Step 4: Simplify right side
    18,796.69x = 200,403,924.83
  5. Step 5: Solve for x
    x = 200,403,924.83/18,796.69
  6. Step 6: Final answer
    x = 10,661.66

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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.