Home / 13,687.56-20,548.32-13,624.36

Finding the Fourth Proportional to 13,687.56, 20,548.32 and 13,624.36

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Solution

The fourth proportional to 13,687.56, 20,548.32 and 13,624.36 is: 20,453.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.56 : 20,548.32 = 13,624.36 : x
  2. Step 2: Convert to fraction form
    13,687.56/20,548.32 = 13,624.36/x
  3. Step 3: Cross multiply
    13,687.56x = 20,548.32 × 13,624.36
  4. Step 4: Simplify right side
    13,687.56x = 279,957,709.08
  5. Step 5: Solve for x
    x = 279,957,709.08/13,687.56
  6. Step 6: Final answer
    x = 20,453.44

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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.