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Finding the Fourth Proportional to 28,979.40, 43,469.10 and 22,418.40

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Solution

The fourth proportional to 28,979.40, 43,469.10 and 22,418.40 is: 33,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.40 : 43,469.10 = 22,418.40 : x
  2. Step 2: Convert to fraction form
    28,979.40/43,469.10 = 22,418.40/x
  3. Step 3: Cross multiply
    28,979.40x = 43,469.10 × 22,418.40
  4. Step 4: Simplify right side
    28,979.40x = 974,507,671.44
  5. Step 5: Solve for x
    x = 974,507,671.44/28,979.40
  6. Step 6: Final answer
    x = 33,627.60

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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.