Home / 20,730.80-31,086.84-5,936.34

Finding the Fourth Proportional to 20,730.80, 31,086.84 and 5,936.34

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Solution

The fourth proportional to 20,730.80, 31,086.84 and 5,936.34 is: 8,901.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.80 : 31,086.84 = 5,936.34 : x
  2. Step 2: Convert to fraction form
    20,730.80/31,086.84 = 5,936.34/x
  3. Step 3: Cross multiply
    20,730.80x = 31,086.84 × 5,936.34
  4. Step 4: Simplify right side
    20,730.80x = 184,542,051.77
  5. Step 5: Solve for x
    x = 184,542,051.77/20,730.80
  6. Step 6: Final answer
    x = 8,901.83

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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.