Home / 20,288,636.82-30,361,116.46-12,615,894.81

Finding the Fourth Proportional to 20,288,636.82, 30,361,116.46 and 12,615,894.81

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Solution

The fourth proportional to 20,288,636.82, 30,361,116.46 and 12,615,894.81 is: 18,879,171.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288,636.82 : 30,361,116.46 = 12,615,894.81 : x
  2. Step 2: Convert to fraction form
    20,288,636.82/30,361,116.46 = 12,615,894.81/x
  3. Step 3: Cross multiply
    20,288,636.82x = 30,361,116.46 × 12,615,894.81
  4. Step 4: Simplify right side
    20,288,636.82x = 383,032,651,573,519.62
  5. Step 5: Solve for x
    x = 383,032,651,573,519.62/20,288,636.82
  6. Step 6: Final answer
    x = 18,879,171.38

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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.