Home / 27,728.14-38,260.41-15,791.70

Finding the Fourth Proportional to 27,728.14, 38,260.41 and 15,791.70

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Solution

The fourth proportional to 27,728.14, 38,260.41 and 15,791.70 is: 21,790.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.14 : 38,260.41 = 15,791.70 : x
  2. Step 2: Convert to fraction form
    27,728.14/38,260.41 = 15,791.70/x
  3. Step 3: Cross multiply
    27,728.14x = 38,260.41 × 15,791.70
  4. Step 4: Simplify right side
    27,728.14x = 604,196,916.60
  5. Step 5: Solve for x
    x = 604,196,916.60/27,728.14
  6. Step 6: Final answer
    x = 21,790.03

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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.