Home / 20,149.62-27,798.98-12,489.44

Finding the Fourth Proportional to 20,149.62, 27,798.98 and 12,489.44

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Solution

The fourth proportional to 20,149.62, 27,798.98 and 12,489.44 is: 17,230.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,149.62 : 27,798.98 = 12,489.44 : x
  2. Step 2: Convert to fraction form
    20,149.62/27,798.98 = 12,489.44/x
  3. Step 3: Cross multiply
    20,149.62x = 27,798.98 × 12,489.44
  4. Step 4: Simplify right side
    20,149.62x = 347,193,491.33
  5. Step 5: Solve for x
    x = 347,193,491.33/20,149.62
  6. Step 6: Final answer
    x = 17,230.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.