Home / 13,813.53-20,720.44-11,057.72

Finding the Fourth Proportional to 13,813.53, 20,720.44 and 11,057.72

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Solution

The fourth proportional to 13,813.53, 20,720.44 and 11,057.72 is: 16,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.53 : 20,720.44 = 11,057.72 : x
  2. Step 2: Convert to fraction form
    13,813.53/20,720.44 = 11,057.72/x
  3. Step 3: Cross multiply
    13,813.53x = 20,720.44 × 11,057.72
  4. Step 4: Simplify right side
    13,813.53x = 229,120,901.09
  5. Step 5: Solve for x
    x = 229,120,901.09/13,813.53
  6. Step 6: Final answer
    x = 16,586.70

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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.