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Finding the Fourth Proportional to 19,879.79, 29,801.15 and 6,723.01

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Solution

The fourth proportional to 19,879.79, 29,801.15 and 6,723.01 is: 10,078.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.79 : 29,801.15 = 6,723.01 : x
  2. Step 2: Convert to fraction form
    19,879.79/29,801.15 = 6,723.01/x
  3. Step 3: Cross multiply
    19,879.79x = 29,801.15 × 6,723.01
  4. Step 4: Simplify right side
    19,879.79x = 200,353,246.84
  5. Step 5: Solve for x
    x = 200,353,246.84/19,879.79
  6. Step 6: Final answer
    x = 10,078.24

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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.