Home / 12,516.22-18,771.61-3,748.78

Finding the Fourth Proportional to 12,516.22, 18,771.61 and 3,748.78

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Solution

The fourth proportional to 12,516.22, 18,771.61 and 3,748.78 is: 5,622.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.22 : 18,771.61 = 3,748.78 : x
  2. Step 2: Convert to fraction form
    12,516.22/18,771.61 = 3,748.78/x
  3. Step 3: Cross multiply
    12,516.22x = 18,771.61 × 3,748.78
  4. Step 4: Simplify right side
    12,516.22x = 70,370,636.14
  5. Step 5: Solve for x
    x = 70,370,636.14/12,516.22
  6. Step 6: Final answer
    x = 5,622.36

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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.