Home / 20,004.57-27,604.42-12,821.81

Finding the Fourth Proportional to 20,004.57, 27,604.42 and 12,821.81

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Solution

The fourth proportional to 20,004.57, 27,604.42 and 12,821.81 is: 17,692.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,004.57 : 27,604.42 = 12,821.81 : x
  2. Step 2: Convert to fraction form
    20,004.57/27,604.42 = 12,821.81/x
  3. Step 3: Cross multiply
    20,004.57x = 27,604.42 × 12,821.81
  4. Step 4: Simplify right side
    20,004.57x = 353,938,458.32
  5. Step 5: Solve for x
    x = 353,938,458.32/20,004.57
  6. Step 6: Final answer
    x = 17,692.88

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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.