Home / 27,728.84-38,270.12-17,661.62

Finding the Fourth Proportional to 27,728.84, 38,270.12 and 17,661.62

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Solution

The fourth proportional to 27,728.84, 38,270.12 and 17,661.62 is: 24,375.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.84 : 38,270.12 = 17,661.62 : x
  2. Step 2: Convert to fraction form
    27,728.84/38,270.12 = 17,661.62/x
  3. Step 3: Cross multiply
    27,728.84x = 38,270.12 × 17,661.62
  4. Step 4: Simplify right side
    27,728.84x = 675,912,316.79
  5. Step 5: Solve for x
    x = 675,912,316.79/27,728.84
  6. Step 6: Final answer
    x = 24,375.79

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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.