Home / 20,155.64-27,813.44-11,202.56

Finding the Fourth Proportional to 20,155.64, 27,813.44 and 11,202.56

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Solution

The fourth proportional to 20,155.64, 27,813.44 and 11,202.56 is: 15,458.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.64 : 27,813.44 = 11,202.56 : x
  2. Step 2: Convert to fraction form
    20,155.64/27,813.44 = 11,202.56/x
  3. Step 3: Cross multiply
    20,155.64x = 27,813.44 × 11,202.56
  4. Step 4: Simplify right side
    20,155.64x = 311,581,730.41
  5. Step 5: Solve for x
    x = 311,581,730.41/20,155.64
  6. Step 6: Final answer
    x = 15,458.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.