Home / 19,917.86-29,879.40-6,766.70

Finding the Fourth Proportional to 19,917.86, 29,879.40 and 6,766.70

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Solution

The fourth proportional to 19,917.86, 29,879.40 and 6,766.70 is: 10,150.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.86 : 29,879.40 = 6,766.70 : x
  2. Step 2: Convert to fraction form
    19,917.86/29,879.40 = 6,766.70/x
  3. Step 3: Cross multiply
    19,917.86x = 29,879.40 × 6,766.70
  4. Step 4: Simplify right side
    19,917.86x = 202,184,935.98
  5. Step 5: Solve for x
    x = 202,184,935.98/19,917.86
  6. Step 6: Final answer
    x = 10,150.94

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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.