Home / 20,777.28-28,671.48-11,826.96

Finding the Fourth Proportional to 20,777.28, 28,671.48 and 11,826.96

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Solution

The fourth proportional to 20,777.28, 28,671.48 and 11,826.96 is: 16,320.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.28 : 28,671.48 = 11,826.96 : x
  2. Step 2: Convert to fraction form
    20,777.28/28,671.48 = 11,826.96/x
  3. Step 3: Cross multiply
    20,777.28x = 28,671.48 × 11,826.96
  4. Step 4: Simplify right side
    20,777.28x = 339,096,447.10
  5. Step 5: Solve for x
    x = 339,096,447.10/20,777.28
  6. Step 6: Final answer
    x = 16,320.54

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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.