Home / 19,849.76-27,390.66-11,891.78

Finding the Fourth Proportional to 19,849.76, 27,390.66 and 11,891.78

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Solution

The fourth proportional to 19,849.76, 27,390.66 and 11,891.78 is: 16,409.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,849.76 : 27,390.66 = 11,891.78 : x
  2. Step 2: Convert to fraction form
    19,849.76/27,390.66 = 11,891.78/x
  3. Step 3: Cross multiply
    19,849.76x = 27,390.66 × 11,891.78
  4. Step 4: Simplify right side
    19,849.76x = 325,723,623.94
  5. Step 5: Solve for x
    x = 325,723,623.94/19,849.76
  6. Step 6: Final answer
    x = 16,409.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.