Home / 26,115.40-39,198.70-12,982.60

Finding the Fourth Proportional to 26,115.40, 39,198.70 and 12,982.60

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Solution

The fourth proportional to 26,115.40, 39,198.70 and 12,982.60 is: 19,486.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,115.40 : 39,198.70 = 12,982.60 : x
  2. Step 2: Convert to fraction form
    26,115.40/39,198.70 = 12,982.60/x
  3. Step 3: Cross multiply
    26,115.40x = 39,198.70 × 12,982.60
  4. Step 4: Simplify right side
    26,115.40x = 508,901,042.62
  5. Step 5: Solve for x
    x = 508,901,042.62/26,115.40
  6. Step 6: Final answer
    x = 19,486.63

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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.