Home / 20,433.08-28,197.76-11,480.96

Finding the Fourth Proportional to 20,433.08, 28,197.76 and 11,480.96

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Solution

The fourth proportional to 20,433.08, 28,197.76 and 11,480.96 is: 15,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.08 : 28,197.76 = 11,480.96 : x
  2. Step 2: Convert to fraction form
    20,433.08/28,197.76 = 11,480.96/x
  3. Step 3: Cross multiply
    20,433.08x = 28,197.76 × 11,480.96
  4. Step 4: Simplify right side
    20,433.08x = 323,737,354.65
  5. Step 5: Solve for x
    x = 323,737,354.65/20,433.08
  6. Step 6: Final answer
    x = 15,843.79

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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.