Home / 20,155.50-27,816.31-11,202.77

Finding the Fourth Proportional to 20,155.50, 27,816.31 and 11,202.77

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Solution

The fourth proportional to 20,155.50, 27,816.31 and 11,202.77 is: 15,460.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.50 : 27,816.31 = 11,202.77 : x
  2. Step 2: Convert to fraction form
    20,155.50/27,816.31 = 11,202.77/x
  3. Step 3: Cross multiply
    20,155.50x = 27,816.31 × 11,202.77
  4. Step 4: Simplify right side
    20,155.50x = 311,619,723.18
  5. Step 5: Solve for x
    x = 311,619,723.18/20,155.50
  6. Step 6: Final answer
    x = 15,460.78

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