Home / 20,871.99-31,308.05-6,081.27

Finding the Fourth Proportional to 20,871.99, 31,308.05 and 6,081.27

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Solution

The fourth proportional to 20,871.99, 31,308.05 and 6,081.27 is: 9,121.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,871.99 : 31,308.05 = 6,081.27 : x
  2. Step 2: Convert to fraction form
    20,871.99/31,308.05 = 6,081.27/x
  3. Step 3: Cross multiply
    20,871.99x = 31,308.05 × 6,081.27
  4. Step 4: Simplify right side
    20,871.99x = 190,392,705.22
  5. Step 5: Solve for x
    x = 190,392,705.22/20,871.99
  6. Step 6: Final answer
    x = 9,121.92

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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.