Home / 20,135.22-27,786.68-11,182.74

Finding the Fourth Proportional to 20,135.22, 27,786.68 and 11,182.74

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Solution

The fourth proportional to 20,135.22, 27,786.68 and 11,182.74 is: 15,432.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.22 : 27,786.68 = 11,182.74 : x
  2. Step 2: Convert to fraction form
    20,135.22/27,786.68 = 11,182.74/x
  3. Step 3: Cross multiply
    20,135.22x = 27,786.68 × 11,182.74
  4. Step 4: Simplify right side
    20,135.22x = 310,731,217.90
  5. Step 5: Solve for x
    x = 310,731,217.90/20,135.22
  6. Step 6: Final answer
    x = 15,432.22

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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.