Home / 18,935.52-28,371.89-11,517.54

Finding the Fourth Proportional to 18,935.52, 28,371.89 and 11,517.54

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Solution

The fourth proportional to 18,935.52, 28,371.89 and 11,517.54 is: 17,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.52 : 28,371.89 = 11,517.54 : x
  2. Step 2: Convert to fraction form
    18,935.52/28,371.89 = 11,517.54/x
  3. Step 3: Cross multiply
    18,935.52x = 28,371.89 × 11,517.54
  4. Step 4: Simplify right side
    18,935.52x = 326,774,406.74
  5. Step 5: Solve for x
    x = 326,774,406.74/18,935.52
  6. Step 6: Final answer
    x = 17,257.22

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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.