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Finding the Fourth Proportional to 28,958.20, 43,404.90 and 14,912.80

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Solution

The fourth proportional to 28,958.20, 43,404.90 and 14,912.80 is: 22,352.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,958.20 : 43,404.90 = 14,912.80 : x
  2. Step 2: Convert to fraction form
    28,958.20/43,404.90 = 14,912.80/x
  3. Step 3: Cross multiply
    28,958.20x = 43,404.90 × 14,912.80
  4. Step 4: Simplify right side
    28,958.20x = 647,288,592.72
  5. Step 5: Solve for x
    x = 647,288,592.72/28,958.20
  6. Step 6: Final answer
    x = 22,352.51

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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.