Home / 20,247.21-27,936.29-12,287.94

Finding the Fourth Proportional to 20,247.21, 27,936.29 and 12,287.94

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Solution

The fourth proportional to 20,247.21, 27,936.29 and 12,287.94 is: 16,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.21 : 27,936.29 = 12,287.94 : x
  2. Step 2: Convert to fraction form
    20,247.21/27,936.29 = 12,287.94/x
  3. Step 3: Cross multiply
    20,247.21x = 27,936.29 × 12,287.94
  4. Step 4: Simplify right side
    20,247.21x = 343,279,393.90
  5. Step 5: Solve for x
    x = 343,279,393.90/20,247.21
  6. Step 6: Final answer
    x = 16,954.40

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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.