Home / 20,118.35-27,766.61-11,168.74

Finding the Fourth Proportional to 20,118.35, 27,766.61 and 11,168.74

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Solution

The fourth proportional to 20,118.35, 27,766.61 and 11,168.74 is: 15,414.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.35 : 27,766.61 = 11,168.74 : x
  2. Step 2: Convert to fraction form
    20,118.35/27,766.61 = 11,168.74/x
  3. Step 3: Cross multiply
    20,118.35x = 27,766.61 × 11,168.74
  4. Step 4: Simplify right side
    20,118.35x = 310,118,131.34
  5. Step 5: Solve for x
    x = 310,118,131.34/20,118.35
  6. Step 6: Final answer
    x = 15,414.69

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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.