Home / 20,558.46-30,849.99-8,871.68

Finding the Fourth Proportional to 20,558.46, 30,849.99 and 8,871.68

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Solution

The fourth proportional to 20,558.46, 30,849.99 and 8,871.68 is: 13,312.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.46 : 30,849.99 = 8,871.68 : x
  2. Step 2: Convert to fraction form
    20,558.46/30,849.99 = 8,871.68/x
  3. Step 3: Cross multiply
    20,558.46x = 30,849.99 × 8,871.68
  4. Step 4: Simplify right side
    20,558.46x = 273,691,239.28
  5. Step 5: Solve for x
    x = 273,691,239.28/20,558.46
  6. Step 6: Final answer
    x = 13,312.83

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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.