Home / 20,155.59-27,813.12-11,202.30

Finding the Fourth Proportional to 20,155.59, 27,813.12 and 11,202.30

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Solution

The fourth proportional to 20,155.59, 27,813.12 and 11,202.30 is: 15,458.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.59 : 27,813.12 = 11,202.30 : x
  2. Step 2: Convert to fraction form
    20,155.59/27,813.12 = 11,202.30/x
  3. Step 3: Cross multiply
    20,155.59x = 27,813.12 × 11,202.30
  4. Step 4: Simplify right side
    20,155.59x = 311,570,914.18
  5. Step 5: Solve for x
    x = 311,570,914.18/20,155.59
  6. Step 6: Final answer
    x = 15,458.29

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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.