Home / 20,923.53-31,388.67-6,879.48

Finding the Fourth Proportional to 20,923.53, 31,388.67 and 6,879.48

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Solution

The fourth proportional to 20,923.53, 31,388.67 and 6,879.48 is: 10,320.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.53 : 31,388.67 = 6,879.48 : x
  2. Step 2: Convert to fraction form
    20,923.53/31,388.67 = 6,879.48/x
  3. Step 3: Cross multiply
    20,923.53x = 31,388.67 × 6,879.48
  4. Step 4: Simplify right side
    20,923.53x = 215,937,727.49
  5. Step 5: Solve for x
    x = 215,937,727.49/20,923.53
  6. Step 6: Final answer
    x = 10,320.33

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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.