Home / 20,917.67-31,371.89-6,127.74

Finding the Fourth Proportional to 20,917.67, 31,371.89 and 6,127.74

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Solution

The fourth proportional to 20,917.67, 31,371.89 and 6,127.74 is: 9,190.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.67 : 31,371.89 = 6,127.74 : x
  2. Step 2: Convert to fraction form
    20,917.67/31,371.89 = 6,127.74/x
  3. Step 3: Cross multiply
    20,917.67x = 31,371.89 × 6,127.74
  4. Step 4: Simplify right side
    20,917.67x = 192,238,754.59
  5. Step 5: Solve for x
    x = 192,238,754.59/20,917.67
  6. Step 6: Final answer
    x = 9,190.26

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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.