Home / 20,640.72-30,961.09-5,849.77

Finding the Fourth Proportional to 20,640.72, 30,961.09 and 5,849.77

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Solution

The fourth proportional to 20,640.72, 30,961.09 and 5,849.77 is: 8,774.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.72 : 30,961.09 = 5,849.77 : x
  2. Step 2: Convert to fraction form
    20,640.72/30,961.09 = 5,849.77/x
  3. Step 3: Cross multiply
    20,640.72x = 30,961.09 × 5,849.77
  4. Step 4: Simplify right side
    20,640.72x = 181,115,210.51
  5. Step 5: Solve for x
    x = 181,115,210.51/20,640.72
  6. Step 6: Final answer
    x = 8,774.65

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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.