Home / 20,412,811.80-30,619,217.70-18,783,059.40

Finding the Fourth Proportional to 20,412,811.80, 30,619,217.70 and 18,783,059.40

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Solution

The fourth proportional to 20,412,811.80, 30,619,217.70 and 18,783,059.40 is: 28,174,589.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412,811.80 : 30,619,217.70 = 18,783,059.40 : x
  2. Step 2: Convert to fraction form
    20,412,811.80/30,619,217.70 = 18,783,059.40/x
  3. Step 3: Cross multiply
    20,412,811.80x = 30,619,217.70 × 18,783,059.40
  4. Step 4: Simplify right side
    20,412,811.80x = 575,122,584,840,631.38
  5. Step 5: Solve for x
    x = 575,122,584,840,631.38/20,412,811.80
  6. Step 6: Final answer
    x = 28,174,589.10

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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.