Home / 19,780.38-27,296.96-10,828.43

Finding the Fourth Proportional to 19,780.38, 27,296.96 and 10,828.43

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Solution

The fourth proportional to 19,780.38, 27,296.96 and 10,828.43 is: 14,943.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.38 : 27,296.96 = 10,828.43 : x
  2. Step 2: Convert to fraction form
    19,780.38/27,296.96 = 10,828.43/x
  3. Step 3: Cross multiply
    19,780.38x = 27,296.96 × 10,828.43
  4. Step 4: Simplify right side
    19,780.38x = 295,583,166.43
  5. Step 5: Solve for x
    x = 295,583,166.43/19,780.38
  6. Step 6: Final answer
    x = 14,943.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.