Home / 20,080.32-27,711.20-11,701.60

Finding the Fourth Proportional to 20,080.32, 27,711.20 and 11,701.60

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Solution

The fourth proportional to 20,080.32, 27,711.20 and 11,701.60 is: 16,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.32 : 27,711.20 = 11,701.60 : x
  2. Step 2: Convert to fraction form
    20,080.32/27,711.20 = 11,701.60/x
  3. Step 3: Cross multiply
    20,080.32x = 27,711.20 × 11,701.60
  4. Step 4: Simplify right side
    20,080.32x = 324,265,377.92
  5. Step 5: Solve for x
    x = 324,265,377.92/20,080.32
  6. Step 6: Final answer
    x = 16,148.42

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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.