Home / 20,676.58-28,533.72-11,245.12

Finding the Fourth Proportional to 20,676.58, 28,533.72 and 11,245.12

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Solution

The fourth proportional to 20,676.58, 28,533.72 and 11,245.12 is: 15,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.58 : 28,533.72 = 11,245.12 : x
  2. Step 2: Convert to fraction form
    20,676.58/28,533.72 = 11,245.12/x
  3. Step 3: Cross multiply
    20,676.58x = 28,533.72 × 11,245.12
  4. Step 4: Simplify right side
    20,676.58x = 320,865,105.45
  5. Step 5: Solve for x
    x = 320,865,105.45/20,676.58
  6. Step 6: Final answer
    x = 15,518.29

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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.