Home / 20,279.36-27,984.64-12,733.44

Finding the Fourth Proportional to 20,279.36, 27,984.64 and 12,733.44

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Solution

The fourth proportional to 20,279.36, 27,984.64 and 12,733.44 is: 17,571.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279.36 : 27,984.64 = 12,733.44 : x
  2. Step 2: Convert to fraction form
    20,279.36/27,984.64 = 12,733.44/x
  3. Step 3: Cross multiply
    20,279.36x = 27,984.64 × 12,733.44
  4. Step 4: Simplify right side
    20,279.36x = 356,340,734.36
  5. Step 5: Solve for x
    x = 356,340,734.36/20,279.36
  6. Step 6: Final answer
    x = 17,571.60

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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.