Home / 27,989.40-38,626.38-15,414.60

Finding the Fourth Proportional to 27,989.40, 38,626.38 and 15,414.60

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Solution

The fourth proportional to 27,989.40, 38,626.38 and 15,414.60 is: 21,272.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,989.40 : 38,626.38 = 15,414.60 : x
  2. Step 2: Convert to fraction form
    27,989.40/38,626.38 = 15,414.60/x
  3. Step 3: Cross multiply
    27,989.40x = 38,626.38 × 15,414.60
  4. Step 4: Simplify right side
    27,989.40x = 595,410,197.15
  5. Step 5: Solve for x
    x = 595,410,197.15/27,989.40
  6. Step 6: Final answer
    x = 21,272.70

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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.