Home / 19,234.20-28,813.90-12,640.52

Finding the Fourth Proportional to 19,234.20, 28,813.90 and 12,640.52

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Solution

The fourth proportional to 19,234.20, 28,813.90 and 12,640.52 is: 18,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,234.20 : 28,813.90 = 12,640.52 : x
  2. Step 2: Convert to fraction form
    19,234.20/28,813.90 = 12,640.52/x
  3. Step 3: Cross multiply
    19,234.20x = 28,813.90 × 12,640.52
  4. Step 4: Simplify right side
    19,234.20x = 364,222,679.23
  5. Step 5: Solve for x
    x = 364,222,679.23/19,234.20
  6. Step 6: Final answer
    x = 18,936.20

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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.