Home / 20,511.58-30,771.96-11,160.04

Finding the Fourth Proportional to 20,511.58, 30,771.96 and 11,160.04

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Solution

The fourth proportional to 20,511.58, 30,771.96 and 11,160.04 is: 16,742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.58 : 30,771.96 = 11,160.04 : x
  2. Step 2: Convert to fraction form
    20,511.58/30,771.96 = 11,160.04/x
  3. Step 3: Cross multiply
    20,511.58x = 30,771.96 × 11,160.04
  4. Step 4: Simplify right side
    20,511.58x = 343,416,304.48
  5. Step 5: Solve for x
    x = 343,416,304.48/20,511.58
  6. Step 6: Final answer
    x = 16,742.56

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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.