Home / 18,329.79-27,486.49-5,179.09

Finding the Fourth Proportional to 18,329.79, 27,486.49 and 5,179.09

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Solution

The fourth proportional to 18,329.79, 27,486.49 and 5,179.09 is: 7,766.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329.79 : 27,486.49 = 5,179.09 : x
  2. Step 2: Convert to fraction form
    18,329.79/27,486.49 = 5,179.09/x
  3. Step 3: Cross multiply
    18,329.79x = 27,486.49 × 5,179.09
  4. Step 4: Simplify right side
    18,329.79x = 142,354,985.08
  5. Step 5: Solve for x
    x = 142,354,985.08/18,329.79
  6. Step 6: Final answer
    x = 7,766.32

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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.