Home / 20,290.21-30,440.93-8,449.55

Finding the Fourth Proportional to 20,290.21, 30,440.93 and 8,449.55

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Solution

The fourth proportional to 20,290.21, 30,440.93 and 8,449.55 is: 12,676.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.21 : 30,440.93 = 8,449.55 : x
  2. Step 2: Convert to fraction form
    20,290.21/30,440.93 = 8,449.55/x
  3. Step 3: Cross multiply
    20,290.21x = 30,440.93 × 8,449.55
  4. Step 4: Simplify right side
    20,290.21x = 257,212,225.62
  5. Step 5: Solve for x
    x = 257,212,225.62/20,290.21
  6. Step 6: Final answer
    x = 12,676.67

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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.