Home / 20,679.62-28,537.01-12,182.09

Finding the Fourth Proportional to 20,679.62, 28,537.01 and 12,182.09

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Solution

The fourth proportional to 20,679.62, 28,537.01 and 12,182.09 is: 16,810.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.62 : 28,537.01 = 12,182.09 : x
  2. Step 2: Convert to fraction form
    20,679.62/28,537.01 = 12,182.09/x
  3. Step 3: Cross multiply
    20,679.62x = 28,537.01 × 12,182.09
  4. Step 4: Simplify right side
    20,679.62x = 347,640,220.56
  5. Step 5: Solve for x
    x = 347,640,220.56/20,679.62
  6. Step 6: Final answer
    x = 16,810.77

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1.5x scale

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.