Home / 20,194.90-27,861.24-12,638.14

Finding the Fourth Proportional to 20,194.90, 27,861.24 and 12,638.14

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Solution

The fourth proportional to 20,194.90, 27,861.24 and 12,638.14 is: 17,435.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,194.90 : 27,861.24 = 12,638.14 : x
  2. Step 2: Convert to fraction form
    20,194.90/27,861.24 = 12,638.14/x
  3. Step 3: Cross multiply
    20,194.90x = 27,861.24 × 12,638.14
  4. Step 4: Simplify right side
    20,194.90x = 352,114,251.69
  5. Step 5: Solve for x
    x = 352,114,251.69/20,194.90
  6. Step 6: Final answer
    x = 17,435.80

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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.