Home / 13,457,421.20-20,162,074.80-8,189,667.20

Finding the Fourth Proportional to 13,457,421.20, 20,162,074.80 and 8,189,667.20

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Solution

The fourth proportional to 13,457,421.20, 20,162,074.80 and 8,189,667.20 is: 12,269,860.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457,421.20 : 20,162,074.80 = 8,189,667.20 : x
  2. Step 2: Convert to fraction form
    13,457,421.20/20,162,074.80 = 8,189,667.20/x
  3. Step 3: Cross multiply
    13,457,421.20x = 20,162,074.80 × 8,189,667.20
  4. Step 4: Simplify right side
    13,457,421.20x = 165,120,682,673,506.56
  5. Step 5: Solve for x
    x = 165,120,682,673,506.56/13,457,421.20
  6. Step 6: Final answer
    x = 12,269,860.64

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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.