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Finding the Fourth Proportional to 28,069.92, 42,104.85 and 8,348.43

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Solution

The fourth proportional to 28,069.92, 42,104.85 and 8,348.43 is: 12,522.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,069.92 : 42,104.85 = 8,348.43 : x
  2. Step 2: Convert to fraction form
    28,069.92/42,104.85 = 8,348.43/x
  3. Step 3: Cross multiply
    28,069.92x = 42,104.85 × 8,348.43
  4. Step 4: Simplify right side
    28,069.92x = 351,509,392.89
  5. Step 5: Solve for x
    x = 351,509,392.89/28,069.92
  6. Step 6: Final answer
    x = 12,522.64

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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.