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Finding the Fourth Proportional to 10,998.82, 16,488.97 and 7,478.97

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Solution

The fourth proportional to 10,998.82, 16,488.97 and 7,478.97 is: 11,212.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.82 : 16,488.97 = 7,478.97 : x
  2. Step 2: Convert to fraction form
    10,998.82/16,488.97 = 7,478.97/x
  3. Step 3: Cross multiply
    10,998.82x = 16,488.97 × 7,478.97
  4. Step 4: Simplify right side
    10,998.82x = 123,320,511.96
  5. Step 5: Solve for x
    x = 123,320,511.96/10,998.82
  6. Step 6: Final answer
    x = 11,212.16

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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.