Home / 20,012.90-27,630.68-12,845.90

Finding the Fourth Proportional to 20,012.90, 27,630.68 and 12,845.90

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Solution

The fourth proportional to 20,012.90, 27,630.68 and 12,845.90 is: 17,735.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,012.90 : 27,630.68 = 12,845.90 : x
  2. Step 2: Convert to fraction form
    20,012.90/27,630.68 = 12,845.90/x
  3. Step 3: Cross multiply
    20,012.90x = 27,630.68 × 12,845.90
  4. Step 4: Simplify right side
    20,012.90x = 354,940,957.06
  5. Step 5: Solve for x
    x = 354,940,957.06/20,012.90
  6. Step 6: Final answer
    x = 17,735.61

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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.