Home / 13,490.12-20,232.72-3,627.09

Finding the Fourth Proportional to 13,490.12, 20,232.72 and 3,627.09

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Solution

The fourth proportional to 13,490.12, 20,232.72 and 3,627.09 is: 5,439.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.12 : 20,232.72 = 3,627.09 : x
  2. Step 2: Convert to fraction form
    13,490.12/20,232.72 = 3,627.09/x
  3. Step 3: Cross multiply
    13,490.12x = 20,232.72 × 3,627.09
  4. Step 4: Simplify right side
    13,490.12x = 73,385,896.38
  5. Step 5: Solve for x
    x = 73,385,896.38/13,490.12
  6. Step 6: Final answer
    x = 5,439.97

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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.