Home / 20,511,969.73-30,768,006.71-8,381,433.21

Finding the Fourth Proportional to 20,511,969.73, 30,768,006.71 and 8,381,433.21

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Solution

The fourth proportional to 20,511,969.73, 30,768,006.71 and 8,381,433.21 is: 12,572,171.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511,969.73 : 30,768,006.71 = 8,381,433.21 : x
  2. Step 2: Convert to fraction form
    20,511,969.73/30,768,006.71 = 8,381,433.21/x
  3. Step 3: Cross multiply
    20,511,969.73x = 30,768,006.71 × 8,381,433.21
  4. Step 4: Simplify right side
    20,511,969.73x = 257,879,993,244,696.84
  5. Step 5: Solve for x
    x = 257,879,993,244,696.84/20,511,969.73
  6. Step 6: Final answer
    x = 12,572,171.11

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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.