Home / 20,191.68-27,863.87-11,238.89

Finding the Fourth Proportional to 20,191.68, 27,863.87 and 11,238.89

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Solution

The fourth proportional to 20,191.68, 27,863.87 and 11,238.89 is: 15,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.68 : 27,863.87 = 11,238.89 : x
  2. Step 2: Convert to fraction form
    20,191.68/27,863.87 = 11,238.89/x
  3. Step 3: Cross multiply
    20,191.68x = 27,863.87 × 11,238.89
  4. Step 4: Simplify right side
    20,191.68x = 313,158,774.39
  5. Step 5: Solve for x
    x = 313,158,774.39/20,191.68
  6. Step 6: Final answer
    x = 15,509.30

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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.