Home / 19,911.66-29,857.42-8,821.74

Finding the Fourth Proportional to 19,911.66, 29,857.42 and 8,821.74

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Solution

The fourth proportional to 19,911.66, 29,857.42 and 8,821.74 is: 13,228.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.66 : 29,857.42 = 8,821.74 : x
  2. Step 2: Convert to fraction form
    19,911.66/29,857.42 = 8,821.74/x
  3. Step 3: Cross multiply
    19,911.66x = 29,857.42 × 8,821.74
  4. Step 4: Simplify right side
    19,911.66x = 263,394,396.31
  5. Step 5: Solve for x
    x = 263,394,396.31/19,911.66
  6. Step 6: Final answer
    x = 13,228.15

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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.