Home / 20,774.60-28,676.33-12,276.76

Finding the Fourth Proportional to 20,774.60, 28,676.33 and 12,276.76

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Solution

The fourth proportional to 20,774.60, 28,676.33 and 12,276.76 is: 16,946.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.60 : 28,676.33 = 12,276.76 : x
  2. Step 2: Convert to fraction form
    20,774.60/28,676.33 = 12,276.76/x
  3. Step 3: Cross multiply
    20,774.60x = 28,676.33 × 12,276.76
  4. Step 4: Simplify right side
    20,774.60x = 352,052,380.09
  5. Step 5: Solve for x
    x = 352,052,380.09/20,774.60
  6. Step 6: Final answer
    x = 16,946.29

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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.