Home / 20,361.96-30,533.25-7,887.81

Finding the Fourth Proportional to 20,361.96, 30,533.25 and 7,887.81

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Solution

The fourth proportional to 20,361.96, 30,533.25 and 7,887.81 is: 11,827.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.96 : 30,533.25 = 7,887.81 : x
  2. Step 2: Convert to fraction form
    20,361.96/30,533.25 = 7,887.81/x
  3. Step 3: Cross multiply
    20,361.96x = 30,533.25 × 7,887.81
  4. Step 4: Simplify right side
    20,361.96x = 240,840,474.68
  5. Step 5: Solve for x
    x = 240,840,474.68/20,361.96
  6. Step 6: Final answer
    x = 11,827.96

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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.