Home / 27,618.94-38,112.78-15,680.71

Finding the Fourth Proportional to 27,618.94, 38,112.78 and 15,680.71

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Solution

The fourth proportional to 27,618.94, 38,112.78 and 15,680.71 is: 21,638.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,618.94 : 38,112.78 = 15,680.71 : x
  2. Step 2: Convert to fraction form
    27,618.94/38,112.78 = 15,680.71/x
  3. Step 3: Cross multiply
    27,618.94x = 38,112.78 × 15,680.71
  4. Step 4: Simplify right side
    27,618.94x = 597,635,450.47
  5. Step 5: Solve for x
    x = 597,635,450.47/27,618.94
  6. Step 6: Final answer
    x = 21,638.61

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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.