Home / 12,879.05-19,320.39-4,112.01

Finding the Fourth Proportional to 12,879.05, 19,320.39 and 4,112.01

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Solution

The fourth proportional to 12,879.05, 19,320.39 and 4,112.01 is: 6,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.05 : 19,320.39 = 4,112.01 : x
  2. Step 2: Convert to fraction form
    12,879.05/19,320.39 = 4,112.01/x
  3. Step 3: Cross multiply
    12,879.05x = 19,320.39 × 4,112.01
  4. Step 4: Simplify right side
    12,879.05x = 79,445,636.88
  5. Step 5: Solve for x
    x = 79,445,636.88/12,879.05
  6. Step 6: Final answer
    x = 6,168.60

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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.