Home / 20,630.87-28,361.11-17,749.07

Finding the Fourth Proportional to 20,630.87, 28,361.11 and 17,749.07

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Solution

The fourth proportional to 20,630.87, 28,361.11 and 17,749.07 is: 24,399.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.87 : 28,361.11 = 17,749.07 : x
  2. Step 2: Convert to fraction form
    20,630.87/28,361.11 = 17,749.07/x
  3. Step 3: Cross multiply
    20,630.87x = 28,361.11 × 17,749.07
  4. Step 4: Simplify right side
    20,630.87x = 503,383,251.42
  5. Step 5: Solve for x
    x = 503,383,251.42/20,630.87
  6. Step 6: Final answer
    x = 24,399.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.