Home / 12,445.46-18,668.34-3,680.55

Finding the Fourth Proportional to 12,445.46, 18,668.34 and 3,680.55

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Solution

The fourth proportional to 12,445.46, 18,668.34 and 3,680.55 is: 5,520.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.46 : 18,668.34 = 3,680.55 : x
  2. Step 2: Convert to fraction form
    12,445.46/18,668.34 = 3,680.55/x
  3. Step 3: Cross multiply
    12,445.46x = 18,668.34 × 3,680.55
  4. Step 4: Simplify right side
    12,445.46x = 68,709,758.79
  5. Step 5: Solve for x
    x = 68,709,758.79/12,445.46
  6. Step 6: Final answer
    x = 5,520.87

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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.