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Finding the Fourth Proportional to 18,339.93, 27,504.51 and 7,809.84

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Solution

The fourth proportional to 18,339.93, 27,504.51 and 7,809.84 is: 11,712.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.93 : 27,504.51 = 7,809.84 : x
  2. Step 2: Convert to fraction form
    18,339.93/27,504.51 = 7,809.84/x
  3. Step 3: Cross multiply
    18,339.93x = 27,504.51 × 7,809.84
  4. Step 4: Simplify right side
    18,339.93x = 214,805,822.38
  5. Step 5: Solve for x
    x = 214,805,822.38/18,339.93
  6. Step 6: Final answer
    x = 11,712.47

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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.