Home / 20,435.52-28,199.50-11,481.30

Finding the Fourth Proportional to 20,435.52, 28,199.50 and 11,481.30

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Solution

The fourth proportional to 20,435.52, 28,199.50 and 11,481.30 is: 15,843.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.52 : 28,199.50 = 11,481.30 : x
  2. Step 2: Convert to fraction form
    20,435.52/28,199.50 = 11,481.30/x
  3. Step 3: Cross multiply
    20,435.52x = 28,199.50 × 11,481.30
  4. Step 4: Simplify right side
    20,435.52x = 323,766,919.35
  5. Step 5: Solve for x
    x = 323,766,919.35/20,435.52
  6. Step 6: Final answer
    x = 15,843.34

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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.