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Finding the Fourth Proportional to 15,063.67, 20,790.78 and 8,694.39

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Solution

The fourth proportional to 15,063.67, 20,790.78 and 8,694.39 is: 11,999.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,063.67 : 20,790.78 = 8,694.39 : x
  2. Step 2: Convert to fraction form
    15,063.67/20,790.78 = 8,694.39/x
  3. Step 3: Cross multiply
    15,063.67x = 20,790.78 × 8,694.39
  4. Step 4: Simplify right side
    15,063.67x = 180,763,078.14
  5. Step 5: Solve for x
    x = 180,763,078.14/15,063.67
  6. Step 6: Final answer
    x = 11,999.94

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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.