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Finding the Fourth Proportional to 11,798.81, 17,698.19 and 8,089.79

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Solution

The fourth proportional to 11,798.81, 17,698.19 and 8,089.79 is: 12,134.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,798.81 : 17,698.19 = 8,089.79 : x
  2. Step 2: Convert to fraction form
    11,798.81/17,698.19 = 8,089.79/x
  3. Step 3: Cross multiply
    11,798.81x = 17,698.19 × 8,089.79
  4. Step 4: Simplify right side
    11,798.81x = 143,174,511.54
  5. Step 5: Solve for x
    x = 143,174,511.54/11,798.81
  6. Step 6: Final answer
    x = 12,134.66

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Double scale
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Similar ratio
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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.