Home / 20,137.42-27,789.60-11,186.26

Finding the Fourth Proportional to 20,137.42, 27,789.60 and 11,186.26

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Solution

The fourth proportional to 20,137.42, 27,789.60 and 11,186.26 is: 15,437.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137.42 : 27,789.60 = 11,186.26 : x
  2. Step 2: Convert to fraction form
    20,137.42/27,789.60 = 11,186.26/x
  3. Step 3: Cross multiply
    20,137.42x = 27,789.60 × 11,186.26
  4. Step 4: Simplify right side
    20,137.42x = 310,861,690.90
  5. Step 5: Solve for x
    x = 310,861,690.90/20,137.42
  6. Step 6: Final answer
    x = 15,437.02

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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.