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Finding the Fourth Proportional to 28,294.86, 42,453.22 and 8,573.58

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Solution

The fourth proportional to 28,294.86, 42,453.22 and 8,573.58 is: 12,863.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,294.86 : 42,453.22 = 8,573.58 : x
  2. Step 2: Convert to fraction form
    28,294.86/42,453.22 = 8,573.58/x
  3. Step 3: Cross multiply
    28,294.86x = 42,453.22 × 8,573.58
  4. Step 4: Simplify right side
    28,294.86x = 363,976,077.93
  5. Step 5: Solve for x
    x = 363,976,077.93/28,294.86
  6. Step 6: Final answer
    x = 12,863.68

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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.