Home / 20,221.83-30,441.94-18,187.39

Finding the Fourth Proportional to 20,221.83, 30,441.94 and 18,187.39

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Solution

The fourth proportional to 20,221.83, 30,441.94 and 18,187.39 is: 27,379.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.83 : 30,441.94 = 18,187.39 : x
  2. Step 2: Convert to fraction form
    20,221.83/30,441.94 = 18,187.39/x
  3. Step 3: Cross multiply
    20,221.83x = 30,441.94 × 18,187.39
  4. Step 4: Simplify right side
    20,221.83x = 553,659,435.14
  5. Step 5: Solve for x
    x = 553,659,435.14/20,221.83
  6. Step 6: Final answer
    x = 27,379.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.