Home / 27,142.82-40,654.07-20,856.56

Finding the Fourth Proportional to 27,142.82, 40,654.07 and 20,856.56

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Solution

The fourth proportional to 27,142.82, 40,654.07 and 20,856.56 is: 31,238.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,142.82 : 40,654.07 = 20,856.56 : x
  2. Step 2: Convert to fraction form
    27,142.82/40,654.07 = 20,856.56/x
  3. Step 3: Cross multiply
    27,142.82x = 40,654.07 × 20,856.56
  4. Step 4: Simplify right side
    27,142.82x = 847,903,899.07
  5. Step 5: Solve for x
    x = 847,903,899.07/27,142.82
  6. Step 6: Final answer
    x = 31,238.61

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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.