Home / 19,911.26-29,856.80-11,143.82

Finding the Fourth Proportional to 19,911.26, 29,856.80 and 11,143.82

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Solution

The fourth proportional to 19,911.26, 29,856.80 and 11,143.82 is: 16,710.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.26 : 29,856.80 = 11,143.82 : x
  2. Step 2: Convert to fraction form
    19,911.26/29,856.80 = 11,143.82/x
  3. Step 3: Cross multiply
    19,911.26x = 29,856.80 × 11,143.82
  4. Step 4: Simplify right side
    19,911.26x = 332,718,804.98
  5. Step 5: Solve for x
    x = 332,718,804.98/19,911.26
  6. Step 6: Final answer
    x = 16,710.08

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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.