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Finding the Fourth Proportional to 28,920.60, 43,380.60 and 14,884.56

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Solution

The fourth proportional to 28,920.60, 43,380.60 and 14,884.56 is: 22,326.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.60 : 43,380.60 = 14,884.56 : x
  2. Step 2: Convert to fraction form
    28,920.60/43,380.60 = 14,884.56/x
  3. Step 3: Cross multiply
    28,920.60x = 43,380.60 × 14,884.56
  4. Step 4: Simplify right side
    28,920.60x = 645,701,143.54
  5. Step 5: Solve for x
    x = 645,701,143.54/28,920.60
  6. Step 6: Final answer
    x = 22,326.69

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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.