Home / 12,439.96-18,657.90-3,672.85

Finding the Fourth Proportional to 12,439.96, 18,657.90 and 3,672.85

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Solution

The fourth proportional to 12,439.96, 18,657.90 and 3,672.85 is: 5,508.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.96 : 18,657.90 = 3,672.85 : x
  2. Step 2: Convert to fraction form
    12,439.96/18,657.90 = 3,672.85/x
  3. Step 3: Cross multiply
    12,439.96x = 18,657.90 × 3,672.85
  4. Step 4: Simplify right side
    12,439.96x = 68,527,668.02
  5. Step 5: Solve for x
    x = 68,527,668.02/12,439.96
  6. Step 6: Final answer
    x = 5,508.67

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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.