Home / 8,129.15-12,192.85-5,513.44

Finding the Fourth Proportional to 8,129.15, 12,192.85 and 5,513.44

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Solution

The fourth proportional to 8,129.15, 12,192.85 and 5,513.44 is: 8,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.15 : 12,192.85 = 5,513.44 : x
  2. Step 2: Convert to fraction form
    8,129.15/12,192.85 = 5,513.44/x
  3. Step 3: Cross multiply
    8,129.15x = 12,192.85 × 5,513.44
  4. Step 4: Simplify right side
    8,129.15x = 67,224,546.90
  5. Step 5: Solve for x
    x = 67,224,546.90/8,129.15
  6. Step 6: Final answer
    x = 8,269.57

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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.