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Finding the Fourth Proportional to 28,132.93, 42,193.11 and 8,408.92

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Solution

The fourth proportional to 28,132.93, 42,193.11 and 8,408.92 is: 12,611.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.93 : 42,193.11 = 8,408.92 : x
  2. Step 2: Convert to fraction form
    28,132.93/42,193.11 = 8,408.92/x
  3. Step 3: Cross multiply
    28,132.93x = 42,193.11 × 8,408.92
  4. Step 4: Simplify right side
    28,132.93x = 354,798,570.82
  5. Step 5: Solve for x
    x = 354,798,570.82/28,132.93
  6. Step 6: Final answer
    x = 12,611.51

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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.