Home / 18,390.49-27,573.87-7,867.38

Finding the Fourth Proportional to 18,390.49, 27,573.87 and 7,867.38

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Solution

The fourth proportional to 18,390.49, 27,573.87 and 7,867.38 is: 11,795.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.49 : 27,573.87 = 7,867.38 : x
  2. Step 2: Convert to fraction form
    18,390.49/27,573.87 = 7,867.38/x
  3. Step 3: Cross multiply
    18,390.49x = 27,573.87 × 7,867.38
  4. Step 4: Simplify right side
    18,390.49x = 216,934,046.91
  5. Step 5: Solve for x
    x = 216,934,046.91/18,390.49
  6. Step 6: Final answer
    x = 11,795.99

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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.