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Finding the Fourth Proportional to 9,998.44, 13,790.39 and 8,865.44

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Solution

The fourth proportional to 9,998.44, 13,790.39 and 8,865.44 is: 12,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.44 : 13,790.39 = 8,865.44 : x
  2. Step 2: Convert to fraction form
    9,998.44/13,790.39 = 8,865.44/x
  3. Step 3: Cross multiply
    9,998.44x = 13,790.39 × 8,865.44
  4. Step 4: Simplify right side
    9,998.44x = 122,257,875.12
  5. Step 5: Solve for x
    x = 122,257,875.12/9,998.44
  6. Step 6: Final answer
    x = 12,227.70

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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.