Home / 20,155.29-27,813.07-11,202.49

Finding the Fourth Proportional to 20,155.29, 27,813.07 and 11,202.49

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Solution

The fourth proportional to 20,155.29, 27,813.07 and 11,202.49 is: 15,458.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.29 : 27,813.07 = 11,202.49 : x
  2. Step 2: Convert to fraction form
    20,155.29/27,813.07 = 11,202.49/x
  3. Step 3: Cross multiply
    20,155.29x = 27,813.07 × 11,202.49
  4. Step 4: Simplify right side
    20,155.29x = 311,575,638.54
  5. Step 5: Solve for x
    x = 311,575,638.54/20,155.29
  6. Step 6: Final answer
    x = 15,458.75

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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.