Home / 20,393.66-28,143.33-11,441.54

Finding the Fourth Proportional to 20,393.66, 28,143.33 and 11,441.54

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Solution

The fourth proportional to 20,393.66, 28,143.33 and 11,441.54 is: 15,789.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.66 : 28,143.33 = 11,441.54 : x
  2. Step 2: Convert to fraction form
    20,393.66/28,143.33 = 11,441.54/x
  3. Step 3: Cross multiply
    20,393.66x = 28,143.33 × 11,441.54
  4. Step 4: Simplify right side
    20,393.66x = 322,003,035.93
  5. Step 5: Solve for x
    x = 322,003,035.93/20,393.66
  6. Step 6: Final answer
    x = 15,789.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.