Home / 27,121.97-37,428.38-15,185.81

Finding the Fourth Proportional to 27,121.97, 37,428.38 and 15,185.81

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Solution

The fourth proportional to 27,121.97, 37,428.38 and 15,185.81 is: 20,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,121.97 : 37,428.38 = 15,185.81 : x
  2. Step 2: Convert to fraction form
    27,121.97/37,428.38 = 15,185.81/x
  3. Step 3: Cross multiply
    27,121.97x = 37,428.38 × 15,185.81
  4. Step 4: Simplify right side
    27,121.97x = 568,380,341.88
  5. Step 5: Solve for x
    x = 568,380,341.88/27,121.97
  6. Step 6: Final answer
    x = 20,956.45

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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.