Home / 18,257.49-27,387.99-5,109.84

Finding the Fourth Proportional to 18,257.49, 27,387.99 and 5,109.84

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Solution

The fourth proportional to 18,257.49, 27,387.99 and 5,109.84 is: 7,665.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,257.49 : 27,387.99 = 5,109.84 : x
  2. Step 2: Convert to fraction form
    18,257.49/27,387.99 = 5,109.84/x
  3. Step 3: Cross multiply
    18,257.49x = 27,387.99 × 5,109.84
  4. Step 4: Simplify right side
    18,257.49x = 139,948,246.82
  5. Step 5: Solve for x
    x = 139,948,246.82/18,257.49
  6. Step 6: Final answer
    x = 7,665.25

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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.