Home / 20,529.18-30,805.32-11,169.87

Finding the Fourth Proportional to 20,529.18, 30,805.32 and 11,169.87

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Solution

The fourth proportional to 20,529.18, 30,805.32 and 11,169.87 is: 16,761.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.18 : 30,805.32 = 11,169.87 : x
  2. Step 2: Convert to fraction form
    20,529.18/30,805.32 = 11,169.87/x
  3. Step 3: Cross multiply
    20,529.18x = 30,805.32 × 11,169.87
  4. Step 4: Simplify right side
    20,529.18x = 344,091,419.71
  5. Step 5: Solve for x
    x = 344,091,419.71/20,529.18
  6. Step 6: Final answer
    x = 16,761.09

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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.