Home / 13,456.38-20,187.83-4,222.38

Finding the Fourth Proportional to 13,456.38, 20,187.83 and 4,222.38

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Solution

The fourth proportional to 13,456.38, 20,187.83 and 4,222.38 is: 6,334.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,456.38 : 20,187.83 = 4,222.38 : x
  2. Step 2: Convert to fraction form
    13,456.38/20,187.83 = 4,222.38/x
  3. Step 3: Cross multiply
    13,456.38x = 20,187.83 × 4,222.38
  4. Step 4: Simplify right side
    13,456.38x = 85,240,567.58
  5. Step 5: Solve for x
    x = 85,240,567.58/13,456.38
  6. Step 6: Final answer
    x = 6,334.59

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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.