Home / 20,080.49-27,711.05-12,121.16

Finding the Fourth Proportional to 20,080.49, 27,711.05 and 12,121.16

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Solution

The fourth proportional to 20,080.49, 27,711.05 and 12,121.16 is: 16,727.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.49 : 27,711.05 = 12,121.16 : x
  2. Step 2: Convert to fraction form
    20,080.49/27,711.05 = 12,121.16/x
  3. Step 3: Cross multiply
    20,080.49x = 27,711.05 × 12,121.16
  4. Step 4: Simplify right side
    20,080.49x = 335,889,871.66
  5. Step 5: Solve for x
    x = 335,889,871.66/20,080.49
  6. Step 6: Final answer
    x = 16,727.18

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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.