Home / 20,181,811.31-30,284,466.21-8,509,450.80

Finding the Fourth Proportional to 20,181,811.31, 30,284,466.21 and 8,509,450.80

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Solution

The fourth proportional to 20,181,811.31, 30,284,466.21 and 8,509,450.80 is: 12,769,130.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181,811.31 : 30,284,466.21 = 8,509,450.80 : x
  2. Step 2: Convert to fraction form
    20,181,811.31/30,284,466.21 = 8,509,450.80/x
  3. Step 3: Cross multiply
    20,181,811.31x = 30,284,466.21 × 8,509,450.80
  4. Step 4: Simplify right side
    20,181,811.31x = 257,704,175,218,257.50
  5. Step 5: Solve for x
    x = 257,704,175,218,257.50/20,181,811.31
  6. Step 6: Final answer
    x = 12,769,130.15

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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.