Home / 20,118.78-27,765.32-11,623.77

Finding the Fourth Proportional to 20,118.78, 27,765.32 and 11,623.77

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Solution

The fourth proportional to 20,118.78, 27,765.32 and 11,623.77 is: 16,041.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.78 : 27,765.32 = 11,623.77 : x
  2. Step 2: Convert to fraction form
    20,118.78/27,765.32 = 11,623.77/x
  3. Step 3: Cross multiply
    20,118.78x = 27,765.32 × 11,623.77
  4. Step 4: Simplify right side
    20,118.78x = 322,737,635.54
  5. Step 5: Solve for x
    x = 322,737,635.54/20,118.78
  6. Step 6: Final answer
    x = 16,041.61

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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.