Home / 20,743.49-28,624.89-11,789.75

Finding the Fourth Proportional to 20,743.49, 28,624.89 and 11,789.75

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Solution

The fourth proportional to 20,743.49, 28,624.89 and 11,789.75 is: 16,269.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.49 : 28,624.89 = 11,789.75 : x
  2. Step 2: Convert to fraction form
    20,743.49/28,624.89 = 11,789.75/x
  3. Step 3: Cross multiply
    20,743.49x = 28,624.89 × 11,789.75
  4. Step 4: Simplify right side
    20,743.49x = 337,480,412.65
  5. Step 5: Solve for x
    x = 337,480,412.65/20,743.49
  6. Step 6: Final answer
    x = 16,269.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.