Home / 27,629.88-38,118.46-15,691.60

Finding the Fourth Proportional to 27,629.88, 38,118.46 and 15,691.60

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Solution

The fourth proportional to 27,629.88, 38,118.46 and 15,691.60 is: 21,648.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,629.88 : 38,118.46 = 15,691.60 : x
  2. Step 2: Convert to fraction form
    27,629.88/38,118.46 = 15,691.60/x
  3. Step 3: Cross multiply
    27,629.88x = 38,118.46 × 15,691.60
  4. Step 4: Simplify right side
    27,629.88x = 598,139,626.94
  5. Step 5: Solve for x
    x = 598,139,626.94/27,629.88
  6. Step 6: Final answer
    x = 21,648.29

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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.