Home / 13,879.26-20,698.70-12,317.58

Finding the Fourth Proportional to 13,879.26, 20,698.70 and 12,317.58

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Solution

The fourth proportional to 13,879.26, 20,698.70 and 12,317.58 is: 18,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.26 : 20,698.70 = 12,317.58 : x
  2. Step 2: Convert to fraction form
    13,879.26/20,698.70 = 12,317.58/x
  3. Step 3: Cross multiply
    13,879.26x = 20,698.70 × 12,317.58
  4. Step 4: Simplify right side
    13,879.26x = 254,957,831.56
  5. Step 5: Solve for x
    x = 254,957,831.56/13,879.26
  6. Step 6: Final answer
    x = 18,369.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.