Home / 20,360.77-28,100.83-11,408.88

Finding the Fourth Proportional to 20,360.77, 28,100.83 and 11,408.88

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Solution

The fourth proportional to 20,360.77, 28,100.83 and 11,408.88 is: 15,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.77 : 28,100.83 = 11,408.88 : x
  2. Step 2: Convert to fraction form
    20,360.77/28,100.83 = 11,408.88/x
  3. Step 3: Cross multiply
    20,360.77x = 28,100.83 × 11,408.88
  4. Step 4: Simplify right side
    20,360.77x = 320,598,968.85
  5. Step 5: Solve for x
    x = 320,598,968.85/20,360.77
  6. Step 6: Final answer
    x = 15,745.92

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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.