Home / 20,434.92-28,198.44-12,371.56

Finding the Fourth Proportional to 20,434.92, 28,198.44 and 12,371.56

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Solution

The fourth proportional to 20,434.92, 28,198.44 and 12,371.56 is: 17,071.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.92 : 28,198.44 = 12,371.56 : x
  2. Step 2: Convert to fraction form
    20,434.92/28,198.44 = 12,371.56/x
  3. Step 3: Cross multiply
    20,434.92x = 28,198.44 × 12,371.56
  4. Step 4: Simplify right side
    20,434.92x = 348,858,692.37
  5. Step 5: Solve for x
    x = 348,858,692.37/20,434.92
  6. Step 6: Final answer
    x = 17,071.69

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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.