Home / 20,533,906.80-30,800,860.20-12,456,003.60

Finding the Fourth Proportional to 20,533,906.80, 30,800,860.20 and 12,456,003.60

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Solution

The fourth proportional to 20,533,906.80, 30,800,860.20 and 12,456,003.60 is: 18,684,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533,906.80 : 30,800,860.20 = 12,456,003.60 : x
  2. Step 2: Convert to fraction form
    20,533,906.80/30,800,860.20 = 12,456,003.60/x
  3. Step 3: Cross multiply
    20,533,906.80x = 30,800,860.20 × 12,456,003.60
  4. Step 4: Simplify right side
    20,533,906.80x = 383,655,625,534,296.69
  5. Step 5: Solve for x
    x = 383,655,625,534,296.69/20,533,906.80
  6. Step 6: Final answer
    x = 18,684,005.40

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1.5x scale

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.