Home / 20,288,636.58-30,361,116.08-12,615,894.56

Finding the Fourth Proportional to 20,288,636.58, 30,361,116.08 and 12,615,894.56

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Solution

The fourth proportional to 20,288,636.58, 30,361,116.08 and 12,615,894.56 is: 18,879,170.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288,636.58 : 30,361,116.08 = 12,615,894.56 : x
  2. Step 2: Convert to fraction form
    20,288,636.58/30,361,116.08 = 12,615,894.56/x
  3. Step 3: Cross multiply
    20,288,636.58x = 30,361,116.08 × 12,615,894.56
  4. Step 4: Simplify right side
    20,288,636.58x = 383,032,639,189,200.50
  5. Step 5: Solve for x
    x = 383,032,639,189,200.50/20,288,636.58
  6. Step 6: Final answer
    x = 18,879,170.99

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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.