Home / 20,670,072.93-30,984,266.84-12,999,199.91

Finding the Fourth Proportional to 20,670,072.93, 30,984,266.84 and 12,999,199.91

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Solution

The fourth proportional to 20,670,072.93, 30,984,266.84 and 12,999,199.91 is: 19,485,692.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670,072.93 : 30,984,266.84 = 12,999,199.91 : x
  2. Step 2: Convert to fraction form
    20,670,072.93/30,984,266.84 = 12,999,199.91/x
  3. Step 3: Cross multiply
    20,670,072.93x = 30,984,266.84 × 12,999,199.91
  4. Step 4: Simplify right side
    20,670,072.93x = 402,770,678,498,026.62
  5. Step 5: Solve for x
    x = 402,770,678,498,026.62/20,670,072.93
  6. Step 6: Final answer
    x = 19,485,692.18

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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.