Home / 12,447.45-18,668.88-3,680.28

Finding the Fourth Proportional to 12,447.45, 18,668.88 and 3,680.28

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Solution

The fourth proportional to 12,447.45, 18,668.88 and 3,680.28 is: 5,519.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447.45 : 18,668.88 = 3,680.28 : x
  2. Step 2: Convert to fraction form
    12,447.45/18,668.88 = 3,680.28/x
  3. Step 3: Cross multiply
    12,447.45x = 18,668.88 × 3,680.28
  4. Step 4: Simplify right side
    12,447.45x = 68,706,705.69
  5. Step 5: Solve for x
    x = 68,706,705.69/12,447.45
  6. Step 6: Final answer
    x = 5,519.74

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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.