Home / 20,142.36-27,797.64-11,190.84

Finding the Fourth Proportional to 20,142.36, 27,797.64 and 11,190.84

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Solution

The fourth proportional to 20,142.36, 27,797.64 and 11,190.84 is: 15,444.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.36 : 27,797.64 = 11,190.84 : x
  2. Step 2: Convert to fraction form
    20,142.36/27,797.64 = 11,190.84/x
  3. Step 3: Cross multiply
    20,142.36x = 27,797.64 × 11,190.84
  4. Step 4: Simplify right side
    20,142.36x = 311,078,941.62
  5. Step 5: Solve for x
    x = 311,078,941.62/20,142.36
  6. Step 6: Final answer
    x = 15,444.02

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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.