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Finding the Fourth Proportional to 9,998.94, 13,791.08 and 8,865.94

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Solution

The fourth proportional to 9,998.94, 13,791.08 and 8,865.94 is: 12,228.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.94 : 13,791.08 = 8,865.94 : x
  2. Step 2: Convert to fraction form
    9,998.94/13,791.08 = 8,865.94/x
  3. Step 3: Cross multiply
    9,998.94x = 13,791.08 × 8,865.94
  4. Step 4: Simplify right side
    9,998.94x = 122,270,887.82
  5. Step 5: Solve for x
    x = 122,270,887.82/9,998.94
  6. Step 6: Final answer
    x = 12,228.38

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Similar ratio
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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.