Home / 27,609.89-38,103.26-20,791.71

Finding the Fourth Proportional to 27,609.89, 38,103.26 and 20,791.71

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Solution

The fourth proportional to 27,609.89, 38,103.26 and 20,791.71 is: 28,693.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,609.89 : 38,103.26 = 20,791.71 : x
  2. Step 2: Convert to fraction form
    27,609.89/38,103.26 = 20,791.71/x
  3. Step 3: Cross multiply
    27,609.89x = 38,103.26 × 20,791.71
  4. Step 4: Simplify right side
    27,609.89x = 792,231,828.02
  5. Step 5: Solve for x
    x = 792,231,828.02/27,609.89
  6. Step 6: Final answer
    x = 28,693.77

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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.