Home / 20,089,621.20-30,134,431.80-13,287,176.40

Finding the Fourth Proportional to 20,089,621.20, 30,134,431.80 and 13,287,176.40

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Solution

The fourth proportional to 20,089,621.20, 30,134,431.80 and 13,287,176.40 is: 19,930,764.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089,621.20 : 30,134,431.80 = 13,287,176.40 : x
  2. Step 2: Convert to fraction form
    20,089,621.20/30,134,431.80 = 13,287,176.40/x
  3. Step 3: Cross multiply
    20,089,621.20x = 30,134,431.80 × 13,287,176.40
  4. Step 4: Simplify right side
    20,089,621.20x = 400,401,511,040,369.56
  5. Step 5: Solve for x
    x = 400,401,511,040,369.56/20,089,621.20
  6. Step 6: Final answer
    x = 19,930,764.60

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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.