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Finding the Fourth Proportional to 20,793.90, 31,149.52 and 19,092.90

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Solution

The fourth proportional to 20,793.90, 31,149.52 and 19,092.90 is: 28,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.90 : 31,149.52 = 19,092.90 : x
  2. Step 2: Convert to fraction form
    20,793.90/31,149.52 = 19,092.90/x
  3. Step 3: Cross multiply
    20,793.90x = 31,149.52 × 19,092.90
  4. Step 4: Simplify right side
    20,793.90x = 594,734,670.41
  5. Step 5: Solve for x
    x = 594,734,670.41/20,793.90
  6. Step 6: Final answer
    x = 28,601.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.