Home / 20,393.44-28,143.68-11,440.96

Finding the Fourth Proportional to 20,393.44, 28,143.68 and 11,440.96

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Solution

The fourth proportional to 20,393.44, 28,143.68 and 11,440.96 is: 15,788.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.44 : 28,143.68 = 11,440.96 : x
  2. Step 2: Convert to fraction form
    20,393.44/28,143.68 = 11,440.96/x
  3. Step 3: Cross multiply
    20,393.44x = 28,143.68 × 11,440.96
  4. Step 4: Simplify right side
    20,393.44x = 321,990,717.13
  5. Step 5: Solve for x
    x = 321,990,717.13/20,393.44
  6. Step 6: Final answer
    x = 15,788.94

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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.