Home / 13,505.12-20,257.68-3,644.38

Finding the Fourth Proportional to 13,505.12, 20,257.68 and 3,644.38

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Solution

The fourth proportional to 13,505.12, 20,257.68 and 3,644.38 is: 5,466.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,505.12 : 20,257.68 = 3,644.38 : x
  2. Step 2: Convert to fraction form
    13,505.12/20,257.68 = 3,644.38/x
  3. Step 3: Cross multiply
    13,505.12x = 20,257.68 × 3,644.38
  4. Step 4: Simplify right side
    13,505.12x = 73,826,702.33
  5. Step 5: Solve for x
    x = 73,826,702.33/13,505.12
  6. Step 6: Final answer
    x = 5,466.57

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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.