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Finding the Fourth Proportional to 27,959.38, 38,584.03 and 15,212.55

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Solution

The fourth proportional to 27,959.38, 38,584.03 and 15,212.55 is: 20,993.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,959.38 : 38,584.03 = 15,212.55 : x
  2. Step 2: Convert to fraction form
    27,959.38/38,584.03 = 15,212.55/x
  3. Step 3: Cross multiply
    27,959.38x = 38,584.03 × 15,212.55
  4. Step 4: Simplify right side
    27,959.38x = 586,961,485.58
  5. Step 5: Solve for x
    x = 586,961,485.58/27,959.38
  6. Step 6: Final answer
    x = 20,993.37

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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.