Home / 20,826.86-28,738.97-11,873.86

Finding the Fourth Proportional to 20,826.86, 28,738.97 and 11,873.86

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Solution

The fourth proportional to 20,826.86, 28,738.97 and 11,873.86 is: 16,384.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.86 : 28,738.97 = 11,873.86 : x
  2. Step 2: Convert to fraction form
    20,826.86/28,738.97 = 11,873.86/x
  3. Step 3: Cross multiply
    20,826.86x = 28,738.97 × 11,873.86
  4. Step 4: Simplify right side
    20,826.86x = 341,242,419.63
  5. Step 5: Solve for x
    x = 341,242,419.63/20,826.86
  6. Step 6: Final answer
    x = 16,384.73

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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.