Home / 18,555.38-27,772.86-13,623.92

Finding the Fourth Proportional to 18,555.38, 27,772.86 and 13,623.92

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Solution

The fourth proportional to 18,555.38, 27,772.86 and 13,623.92 is: 20,391.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,555.38 : 27,772.86 = 13,623.92 : x
  2. Step 2: Convert to fraction form
    18,555.38/27,772.86 = 13,623.92/x
  3. Step 3: Cross multiply
    18,555.38x = 27,772.86 × 13,623.92
  4. Step 4: Simplify right side
    18,555.38x = 378,375,222.81
  5. Step 5: Solve for x
    x = 378,375,222.81/18,555.38
  6. Step 6: Final answer
    x = 20,391.67

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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.