Home / 20,511.22-28,308.06-12,016.58

Finding the Fourth Proportional to 20,511.22, 28,308.06 and 12,016.58

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Solution

The fourth proportional to 20,511.22, 28,308.06 and 12,016.58 is: 16,584.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.22 : 28,308.06 = 12,016.58 : x
  2. Step 2: Convert to fraction form
    20,511.22/28,308.06 = 12,016.58/x
  3. Step 3: Cross multiply
    20,511.22x = 28,308.06 × 12,016.58
  4. Step 4: Simplify right side
    20,511.22x = 340,166,007.55
  5. Step 5: Solve for x
    x = 340,166,007.55/20,511.22
  6. Step 6: Final answer
    x = 16,584.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.