Home / 20,133.60-27,786.58-11,520.56

Finding the Fourth Proportional to 20,133.60, 27,786.58 and 11,520.56

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Solution

The fourth proportional to 20,133.60, 27,786.58 and 11,520.56 is: 15,899.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.60 : 27,786.58 = 11,520.56 : x
  2. Step 2: Convert to fraction form
    20,133.60/27,786.58 = 11,520.56/x
  3. Step 3: Cross multiply
    20,133.60x = 27,786.58 × 11,520.56
  4. Step 4: Simplify right side
    20,133.60x = 320,117,002.75
  5. Step 5: Solve for x
    x = 320,117,002.75/20,133.60
  6. Step 6: Final answer
    x = 15,899.64

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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.