Home / 20,589.05-30,882.89-8,735.21

Finding the Fourth Proportional to 20,589.05, 30,882.89 and 8,735.21

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Solution

The fourth proportional to 20,589.05, 30,882.89 and 8,735.21 is: 13,102.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.05 : 30,882.89 = 8,735.21 : x
  2. Step 2: Convert to fraction form
    20,589.05/30,882.89 = 8,735.21/x
  3. Step 3: Cross multiply
    20,589.05x = 30,882.89 × 8,735.21
  4. Step 4: Simplify right side
    20,589.05x = 269,768,463.66
  5. Step 5: Solve for x
    x = 269,768,463.66/20,589.05
  6. Step 6: Final answer
    x = 13,102.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.