Home / 19,911.56-27,468.76-11,939.96

Finding the Fourth Proportional to 19,911.56, 27,468.76 and 11,939.96

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Solution

The fourth proportional to 19,911.56, 27,468.76 and 11,939.96 is: 16,471.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.56 : 27,468.76 = 11,939.96 : x
  2. Step 2: Convert to fraction form
    19,911.56/27,468.76 = 11,939.96/x
  3. Step 3: Cross multiply
    19,911.56x = 27,468.76 × 11,939.96
  4. Step 4: Simplify right side
    19,911.56x = 327,975,895.65
  5. Step 5: Solve for x
    x = 327,975,895.65/19,911.56
  6. Step 6: Final answer
    x = 16,471.63

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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.