Home / 12,879.60-19,297.80-10,676.40

Finding the Fourth Proportional to 12,879.60, 19,297.80 and 10,676.40

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Solution

The fourth proportional to 12,879.60, 19,297.80 and 10,676.40 is: 15,996.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.60 : 19,297.80 = 10,676.40 : x
  2. Step 2: Convert to fraction form
    12,879.60/19,297.80 = 10,676.40/x
  3. Step 3: Cross multiply
    12,879.60x = 19,297.80 × 10,676.40
  4. Step 4: Simplify right side
    12,879.60x = 206,031,031.92
  5. Step 5: Solve for x
    x = 206,031,031.92/12,879.60
  6. Step 6: Final answer
    x = 15,996.69

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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.