Home / 20,201.60-30,294.72-8,511.68

Finding the Fourth Proportional to 20,201.60, 30,294.72 and 8,511.68

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Solution

The fourth proportional to 20,201.60, 30,294.72 and 8,511.68 is: 12,764.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.60 : 30,294.72 = 8,511.68 : x
  2. Step 2: Convert to fraction form
    20,201.60/30,294.72 = 8,511.68/x
  3. Step 3: Cross multiply
    20,201.60x = 30,294.72 × 8,511.68
  4. Step 4: Simplify right side
    20,201.60x = 257,858,962.33
  5. Step 5: Solve for x
    x = 257,858,962.33/20,201.60
  6. Step 6: Final answer
    x = 12,764.28

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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.