Home / 13,645.67-20,470.32-4,879.44

Finding the Fourth Proportional to 13,645.67, 20,470.32 and 4,879.44

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Solution

The fourth proportional to 13,645.67, 20,470.32 and 4,879.44 is: 7,319.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.67 : 20,470.32 = 4,879.44 : x
  2. Step 2: Convert to fraction form
    13,645.67/20,470.32 = 4,879.44/x
  3. Step 3: Cross multiply
    13,645.67x = 20,470.32 × 4,879.44
  4. Step 4: Simplify right side
    13,645.67x = 99,883,698.22
  5. Step 5: Solve for x
    x = 99,883,698.22/13,645.67
  6. Step 6: Final answer
    x = 7,319.81

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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.