Home / 20,761.92-31,131.36-6,903.36

Finding the Fourth Proportional to 20,761.92, 31,131.36 and 6,903.36

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Solution

The fourth proportional to 20,761.92, 31,131.36 and 6,903.36 is: 10,351.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.92 : 31,131.36 = 6,903.36 : x
  2. Step 2: Convert to fraction form
    20,761.92/31,131.36 = 6,903.36/x
  3. Step 3: Cross multiply
    20,761.92x = 31,131.36 × 6,903.36
  4. Step 4: Simplify right side
    20,761.92x = 214,910,985.37
  5. Step 5: Solve for x
    x = 214,910,985.37/20,761.92
  6. Step 6: Final answer
    x = 10,351.21

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1.5x scale

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.