Home / 20,080.26-27,711.47-12,120.93

Finding the Fourth Proportional to 20,080.26, 27,711.47 and 12,120.93

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Solution

The fourth proportional to 20,080.26, 27,711.47 and 12,120.93 is: 16,727.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.26 : 27,711.47 = 12,120.93 : x
  2. Step 2: Convert to fraction form
    20,080.26/27,711.47 = 12,120.93/x
  3. Step 3: Cross multiply
    20,080.26x = 27,711.47 × 12,120.93
  4. Step 4: Simplify right side
    20,080.26x = 335,888,588.91
  5. Step 5: Solve for x
    x = 335,888,588.91/20,080.26
  6. Step 6: Final answer
    x = 16,727.31

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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.