Home / 18,456.72-27,705.14-17,129.94

Finding the Fourth Proportional to 18,456.72, 27,705.14 and 17,129.94

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Solution

The fourth proportional to 18,456.72, 27,705.14 and 17,129.94 is: 25,713.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.72 : 27,705.14 = 17,129.94 : x
  2. Step 2: Convert to fraction form
    18,456.72/27,705.14 = 17,129.94/x
  3. Step 3: Cross multiply
    18,456.72x = 27,705.14 × 17,129.94
  4. Step 4: Simplify right side
    18,456.72x = 474,587,385.89
  5. Step 5: Solve for x
    x = 474,587,385.89/18,456.72
  6. Step 6: Final answer
    x = 25,713.53

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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.