Home / 28,961.15-43,362.70-21,919.86

Finding the Fourth Proportional to 28,961.15, 43,362.70 and 21,919.86

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Solution

The fourth proportional to 28,961.15, 43,362.70 and 21,919.86 is: 32,819.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.15 : 43,362.70 = 21,919.86 : x
  2. Step 2: Convert to fraction form
    28,961.15/43,362.70 = 21,919.86/x
  3. Step 3: Cross multiply
    28,961.15x = 43,362.70 × 21,919.86
  4. Step 4: Simplify right side
    28,961.15x = 950,504,313.22
  5. Step 5: Solve for x
    x = 950,504,313.22/28,961.15
  6. Step 6: Final answer
    x = 32,819.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.