Home / 20,433.06-28,198.70-11,359.42

Finding the Fourth Proportional to 20,433.06, 28,198.70 and 11,359.42

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Solution

The fourth proportional to 20,433.06, 28,198.70 and 11,359.42 is: 15,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.06 : 28,198.70 = 11,359.42 : x
  2. Step 2: Convert to fraction form
    20,433.06/28,198.70 = 11,359.42/x
  3. Step 3: Cross multiply
    20,433.06x = 28,198.70 × 11,359.42
  4. Step 4: Simplify right side
    20,433.06x = 320,320,876.75
  5. Step 5: Solve for x
    x = 320,320,876.75/20,433.06
  6. Step 6: Final answer
    x = 15,676.60

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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.