Home / 20,811-31,207.24-6,016.40

Finding the Fourth Proportional to 20,811, 31,207.24 and 6,016.40

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Solution

The fourth proportional to 20,811, 31,207.24 and 6,016.40 is: 9,021.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811 : 31,207.24 = 6,016.40 : x
  2. Step 2: Convert to fraction form
    20,811/31,207.24 = 6,016.40/x
  3. Step 3: Cross multiply
    20,811x = 31,207.24 × 6,016.40
  4. Step 4: Simplify right side
    20,811x = 187,755,238.74
  5. Step 5: Solve for x
    x = 187,755,238.74/20,811
  6. Step 6: Final answer
    x = 9,021.92

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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.