Home / 13,613.34-20,421.41-3,752.61

Finding the Fourth Proportional to 13,613.34, 20,421.41 and 3,752.61

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Solution

The fourth proportional to 13,613.34, 20,421.41 and 3,752.61 is: 5,629.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.34 : 20,421.41 = 3,752.61 : x
  2. Step 2: Convert to fraction form
    13,613.34/20,421.41 = 3,752.61/x
  3. Step 3: Cross multiply
    13,613.34x = 20,421.41 × 3,752.61
  4. Step 4: Simplify right side
    13,613.34x = 76,633,568.62
  5. Step 5: Solve for x
    x = 76,633,568.62/13,613.34
  6. Step 6: Final answer
    x = 5,629.30

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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.