Home / 13,813.63-20,720.60-11,057.82

Finding the Fourth Proportional to 13,813.63, 20,720.60 and 11,057.82

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Solution

The fourth proportional to 13,813.63, 20,720.60 and 11,057.82 is: 16,586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.63 : 20,720.60 = 11,057.82 : x
  2. Step 2: Convert to fraction form
    13,813.63/20,720.60 = 11,057.82/x
  3. Step 3: Cross multiply
    13,813.63x = 20,720.60 × 11,057.82
  4. Step 4: Simplify right side
    13,813.63x = 229,124,704.43
  5. Step 5: Solve for x
    x = 229,124,704.43/13,813.63
  6. Step 6: Final answer
    x = 16,586.85

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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.