Home / 20,073.25-27,701.07-11,121.31

Finding the Fourth Proportional to 20,073.25, 27,701.07 and 11,121.31

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Solution

The fourth proportional to 20,073.25, 27,701.07 and 11,121.31 is: 15,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,073.25 : 27,701.07 = 11,121.31 : x
  2. Step 2: Convert to fraction form
    20,073.25/27,701.07 = 11,121.31/x
  3. Step 3: Cross multiply
    20,073.25x = 27,701.07 × 11,121.31
  4. Step 4: Simplify right side
    20,073.25x = 308,072,186.80
  5. Step 5: Solve for x
    x = 308,072,186.80/20,073.25
  6. Step 6: Final answer
    x = 15,347.40

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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.