Home / 20,868,996.78-28,794,902.94-12,048,295.20

Finding the Fourth Proportional to 20,868,996.78, 28,794,902.94 and 12,048,295.20

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Solution

The fourth proportional to 20,868,996.78, 28,794,902.94 and 12,048,295.20 is: 16,624,157.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868,996.78 : 28,794,902.94 = 12,048,295.20 : x
  2. Step 2: Convert to fraction form
    20,868,996.78/28,794,902.94 = 12,048,295.20/x
  3. Step 3: Cross multiply
    20,868,996.78x = 28,794,902.94 × 12,048,295.20
  4. Step 4: Simplify right side
    20,868,996.78x = 346,929,490,876,467.88
  5. Step 5: Solve for x
    x = 346,929,490,876,467.88/20,868,996.78
  6. Step 6: Final answer
    x = 16,624,157.57

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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.