Home / 28,638.30-42,974.19-11,996.92

Finding the Fourth Proportional to 28,638.30, 42,974.19 and 11,996.92

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Solution

The fourth proportional to 28,638.30, 42,974.19 and 11,996.92 is: 18,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.30 : 42,974.19 = 11,996.92 : x
  2. Step 2: Convert to fraction form
    28,638.30/42,974.19 = 11,996.92/x
  3. Step 3: Cross multiply
    28,638.30x = 42,974.19 × 11,996.92
  4. Step 4: Simplify right side
    28,638.30x = 515,557,919.49
  5. Step 5: Solve for x
    x = 515,557,919.49/28,638.30
  6. Step 6: Final answer
    x = 18,002.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.