Home / 20,868,993.78-28,794,898.82-12,048,292.20

Finding the Fourth Proportional to 20,868,993.78, 28,794,898.82 and 12,048,292.20

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Solution

The fourth proportional to 20,868,993.78, 28,794,898.82 and 12,048,292.20 is: 16,624,153.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868,993.78 : 28,794,898.82 = 12,048,292.20 : x
  2. Step 2: Convert to fraction form
    20,868,993.78/28,794,898.82 = 12,048,292.20/x
  3. Step 3: Cross multiply
    20,868,993.78x = 28,794,898.82 × 12,048,292.20
  4. Step 4: Simplify right side
    20,868,993.78x = 346,929,354,792,553.75
  5. Step 5: Solve for x
    x = 346,929,354,792,553.75/20,868,993.78
  6. Step 6: Final answer
    x = 16,624,153.44

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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.