Home / 18,515.28-27,772.92-10,719.84

Finding the Fourth Proportional to 18,515.28, 27,772.92 and 10,719.84

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Solution

The fourth proportional to 18,515.28, 27,772.92 and 10,719.84 is: 16,079.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.28 : 27,772.92 = 10,719.84 : x
  2. Step 2: Convert to fraction form
    18,515.28/27,772.92 = 10,719.84/x
  3. Step 3: Cross multiply
    18,515.28x = 27,772.92 × 10,719.84
  4. Step 4: Simplify right side
    18,515.28x = 297,721,258.73
  5. Step 5: Solve for x
    x = 297,721,258.73/18,515.28
  6. Step 6: Final answer
    x = 16,079.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.