Home / 19,743.88-27,256-11,678.90

Finding the Fourth Proportional to 19,743.88, 27,256 and 11,678.90

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Solution

The fourth proportional to 19,743.88, 27,256 and 11,678.90 is: 16,122.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,743.88 : 27,256 = 11,678.90 : x
  2. Step 2: Convert to fraction form
    19,743.88/27,256 = 11,678.90/x
  3. Step 3: Cross multiply
    19,743.88x = 27,256 × 11,678.90
  4. Step 4: Simplify right side
    19,743.88x = 318,320,098.40
  5. Step 5: Solve for x
    x = 318,320,098.40/19,743.88
  6. Step 6: Final answer
    x = 16,122.47

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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.