Home / 20,486,513.80-30,729,770.70-18,844,222.60

Finding the Fourth Proportional to 20,486,513.80, 30,729,770.70 and 18,844,222.60

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Solution

The fourth proportional to 20,486,513.80, 30,729,770.70 and 18,844,222.60 is: 28,266,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486,513.80 : 30,729,770.70 = 18,844,222.60 : x
  2. Step 2: Convert to fraction form
    20,486,513.80/30,729,770.70 = 18,844,222.60/x
  3. Step 3: Cross multiply
    20,486,513.80x = 30,729,770.70 × 18,844,222.60
  4. Step 4: Simplify right side
    20,486,513.80x = 579,078,639,517,757.88
  5. Step 5: Solve for x
    x = 579,078,639,517,757.88/20,486,513.80
  6. Step 6: Final answer
    x = 28,266,333.90

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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.