Home / 20,183.15-27,862.83-15,635.71

Finding the Fourth Proportional to 20,183.15, 27,862.83 and 15,635.71

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Solution

The fourth proportional to 20,183.15, 27,862.83 and 15,635.71 is: 21,585.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.15 : 27,862.83 = 15,635.71 : x
  2. Step 2: Convert to fraction form
    20,183.15/27,862.83 = 15,635.71/x
  3. Step 3: Cross multiply
    20,183.15x = 27,862.83 × 15,635.71
  4. Step 4: Simplify right side
    20,183.15x = 435,655,060.00
  5. Step 5: Solve for x
    x = 435,655,060.00/20,183.15
  6. Step 6: Final answer
    x = 21,585.09

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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.