Home / 13,285.26-19,947.78-11,511.81

Finding the Fourth Proportional to 13,285.26, 19,947.78 and 11,511.81

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Solution

The fourth proportional to 13,285.26, 19,947.78 and 11,511.81 is: 17,284.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.26 : 19,947.78 = 11,511.81 : x
  2. Step 2: Convert to fraction form
    13,285.26/19,947.78 = 11,511.81/x
  3. Step 3: Cross multiply
    13,285.26x = 19,947.78 × 11,511.81
  4. Step 4: Simplify right side
    13,285.26x = 229,635,053.28
  5. Step 5: Solve for x
    x = 229,635,053.28/13,285.26
  6. Step 6: Final answer
    x = 17,284.95

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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.