Home / 19,872.96-27,425.42-10,921.31

Finding the Fourth Proportional to 19,872.96, 27,425.42 and 10,921.31

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Solution

The fourth proportional to 19,872.96, 27,425.42 and 10,921.31 is: 15,071.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.96 : 27,425.42 = 10,921.31 : x
  2. Step 2: Convert to fraction form
    19,872.96/27,425.42 = 10,921.31/x
  3. Step 3: Cross multiply
    19,872.96x = 27,425.42 × 10,921.31
  4. Step 4: Simplify right side
    19,872.96x = 299,521,513.70
  5. Step 5: Solve for x
    x = 299,521,513.70/19,872.96
  6. Step 6: Final answer
    x = 15,071.81

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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.