Home / 20,667.22-28,520.68-11,236

Finding the Fourth Proportional to 20,667.22, 28,520.68 and 11,236

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Solution

The fourth proportional to 20,667.22, 28,520.68 and 11,236 is: 15,505.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.22 : 28,520.68 = 11,236 : x
  2. Step 2: Convert to fraction form
    20,667.22/28,520.68 = 11,236/x
  3. Step 3: Cross multiply
    20,667.22x = 28,520.68 × 11,236
  4. Step 4: Simplify right side
    20,667.22x = 320,458,360.48
  5. Step 5: Solve for x
    x = 320,458,360.48/20,667.22
  6. Step 6: Final answer
    x = 15,505.63

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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.