Home / 13,112.72-19,671.96-3,879.44

Finding the Fourth Proportional to 13,112.72, 19,671.96 and 3,879.44

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Solution

The fourth proportional to 13,112.72, 19,671.96 and 3,879.44 is: 5,820.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.72 : 19,671.96 = 3,879.44 : x
  2. Step 2: Convert to fraction form
    13,112.72/19,671.96 = 3,879.44/x
  3. Step 3: Cross multiply
    13,112.72x = 19,671.96 × 3,879.44
  4. Step 4: Simplify right side
    13,112.72x = 76,316,188.50
  5. Step 5: Solve for x
    x = 76,316,188.50/13,112.72
  6. Step 6: Final answer
    x = 5,820.01

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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.