Home / 20,131.38-27,782.64-12,173.94

Finding the Fourth Proportional to 20,131.38, 27,782.64 and 12,173.94

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Solution

The fourth proportional to 20,131.38, 27,782.64 and 12,173.94 is: 16,800.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.38 : 27,782.64 = 12,173.94 : x
  2. Step 2: Convert to fraction form
    20,131.38/27,782.64 = 12,173.94/x
  3. Step 3: Cross multiply
    20,131.38x = 27,782.64 × 12,173.94
  4. Step 4: Simplify right side
    20,131.38x = 338,224,192.40
  5. Step 5: Solve for x
    x = 338,224,192.40/20,131.38
  6. Step 6: Final answer
    x = 16,800.84

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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.