Home / 13,613.68-20,418.57-4,251.52

Finding the Fourth Proportional to 13,613.68, 20,418.57 and 4,251.52

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Solution

The fourth proportional to 13,613.68, 20,418.57 and 4,251.52 is: 6,376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.68 : 20,418.57 = 4,251.52 : x
  2. Step 2: Convert to fraction form
    13,613.68/20,418.57 = 4,251.52/x
  3. Step 3: Cross multiply
    13,613.68x = 20,418.57 × 4,251.52
  4. Step 4: Simplify right side
    13,613.68x = 86,809,958.73
  5. Step 5: Solve for x
    x = 86,809,958.73/13,613.68
  6. Step 6: Final answer
    x = 6,376.67

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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.