Home / 11,869.88-17,828.73-7,135.43

Finding the Fourth Proportional to 11,869.88, 17,828.73 and 7,135.43

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Solution

The fourth proportional to 11,869.88, 17,828.73 and 7,135.43 is: 10,717.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.88 : 17,828.73 = 7,135.43 : x
  2. Step 2: Convert to fraction form
    11,869.88/17,828.73 = 7,135.43/x
  3. Step 3: Cross multiply
    11,869.88x = 17,828.73 × 7,135.43
  4. Step 4: Simplify right side
    11,869.88x = 127,215,654.90
  5. Step 5: Solve for x
    x = 127,215,654.90/11,869.88
  6. Step 6: Final answer
    x = 10,717.52

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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.