Home / 18,438.60-27,629.85-13,511.49

Finding the Fourth Proportional to 18,438.60, 27,629.85 and 13,511.49

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Solution

The fourth proportional to 18,438.60, 27,629.85 and 13,511.49 is: 20,246.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.60 : 27,629.85 = 13,511.49 : x
  2. Step 2: Convert to fraction form
    18,438.60/27,629.85 = 13,511.49/x
  3. Step 3: Cross multiply
    18,438.60x = 27,629.85 × 13,511.49
  4. Step 4: Simplify right side
    18,438.60x = 373,320,441.98
  5. Step 5: Solve for x
    x = 373,320,441.98/18,438.60
  6. Step 6: Final answer
    x = 20,246.68

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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.