Home / 20,969,271.69-28,936,664.15-11,677,321.05

Finding the Fourth Proportional to 20,969,271.69, 28,936,664.15 and 11,677,321.05

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Solution

The fourth proportional to 20,969,271.69, 28,936,664.15 and 11,677,321.05 is: 16,114,184.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969,271.69 : 28,936,664.15 = 11,677,321.05 : x
  2. Step 2: Convert to fraction form
    20,969,271.69/28,936,664.15 = 11,677,321.05/x
  3. Step 3: Cross multiply
    20,969,271.69x = 28,936,664.15 × 11,677,321.05
  4. Step 4: Simplify right side
    20,969,271.69x = 337,902,717,337,188.75
  5. Step 5: Solve for x
    x = 337,902,717,337,188.75/20,969,271.69
  6. Step 6: Final answer
    x = 16,114,184.71

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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.