Home / 13,815.44-20,731.80-5,607.44

Finding the Fourth Proportional to 13,815.44, 20,731.80 and 5,607.44

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Solution

The fourth proportional to 13,815.44, 20,731.80 and 5,607.44 is: 8,414.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.44 : 20,731.80 = 5,607.44 : x
  2. Step 2: Convert to fraction form
    13,815.44/20,731.80 = 5,607.44/x
  3. Step 3: Cross multiply
    13,815.44x = 20,731.80 × 5,607.44
  4. Step 4: Simplify right side
    13,815.44x = 116,252,324.59
  5. Step 5: Solve for x
    x = 116,252,324.59/13,815.44
  6. Step 6: Final answer
    x = 8,414.67

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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.