Home / 20,120.32-30,177.12-11,116.96

Finding the Fourth Proportional to 20,120.32, 30,177.12 and 11,116.96

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Solution

The fourth proportional to 20,120.32, 30,177.12 and 11,116.96 is: 16,673.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.32 : 30,177.12 = 11,116.96 : x
  2. Step 2: Convert to fraction form
    20,120.32/30,177.12 = 11,116.96/x
  3. Step 3: Cross multiply
    20,120.32x = 30,177.12 × 11,116.96
  4. Step 4: Simplify right side
    20,120.32x = 335,477,835.96
  5. Step 5: Solve for x
    x = 335,477,835.96/20,120.32
  6. Step 6: Final answer
    x = 16,673.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.