Home / 20,104.56-27,743.04-12,142.08

Finding the Fourth Proportional to 20,104.56, 27,743.04 and 12,142.08

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Solution

The fourth proportional to 20,104.56, 27,743.04 and 12,142.08 is: 16,755.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.56 : 27,743.04 = 12,142.08 : x
  2. Step 2: Convert to fraction form
    20,104.56/27,743.04 = 12,142.08/x
  3. Step 3: Cross multiply
    20,104.56x = 27,743.04 × 12,142.08
  4. Step 4: Simplify right side
    20,104.56x = 336,858,211.12
  5. Step 5: Solve for x
    x = 336,858,211.12/20,104.56
  6. Step 6: Final answer
    x = 16,755.31

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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.