Home / 27,647.64-38,141.61-18,691.89

Finding the Fourth Proportional to 27,647.64, 38,141.61 and 18,691.89

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Solution

The fourth proportional to 27,647.64, 38,141.61 and 18,691.89 is: 25,786.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,647.64 : 38,141.61 = 18,691.89 : x
  2. Step 2: Convert to fraction form
    27,647.64/38,141.61 = 18,691.89/x
  3. Step 3: Cross multiply
    27,647.64x = 38,141.61 × 18,691.89
  4. Step 4: Simplify right side
    27,647.64x = 712,938,778.54
  5. Step 5: Solve for x
    x = 712,938,778.54/27,647.64
  6. Step 6: Final answer
    x = 25,786.61

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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.