Home / 19,879.10-27,435.75-12,826.04

Finding the Fourth Proportional to 19,879.10, 27,435.75 and 12,826.04

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Solution

The fourth proportional to 19,879.10, 27,435.75 and 12,826.04 is: 17,701.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.10 : 27,435.75 = 12,826.04 : x
  2. Step 2: Convert to fraction form
    19,879.10/27,435.75 = 12,826.04/x
  3. Step 3: Cross multiply
    19,879.10x = 27,435.75 × 12,826.04
  4. Step 4: Simplify right side
    19,879.10x = 351,892,026.93
  5. Step 5: Solve for x
    x = 351,892,026.93/19,879.10
  6. Step 6: Final answer
    x = 17,701.61

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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.