Home / 20,202.30-27,878.45-11,249.57

Finding the Fourth Proportional to 20,202.30, 27,878.45 and 11,249.57

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Solution

The fourth proportional to 20,202.30, 27,878.45 and 11,249.57 is: 15,524.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.30 : 27,878.45 = 11,249.57 : x
  2. Step 2: Convert to fraction form
    20,202.30/27,878.45 = 11,249.57/x
  3. Step 3: Cross multiply
    20,202.30x = 27,878.45 × 11,249.57
  4. Step 4: Simplify right side
    20,202.30x = 313,620,588.21
  5. Step 5: Solve for x
    x = 313,620,588.21/20,202.30
  6. Step 6: Final answer
    x = 15,524.00

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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.