Home / 20,007.68-30,008.36-12,589.43

Finding the Fourth Proportional to 20,007.68, 30,008.36 and 12,589.43

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Solution

The fourth proportional to 20,007.68, 30,008.36 and 12,589.43 is: 18,882.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,007.68 : 30,008.36 = 12,589.43 : x
  2. Step 2: Convert to fraction form
    20,007.68/30,008.36 = 12,589.43/x
  3. Step 3: Cross multiply
    20,007.68x = 30,008.36 × 12,589.43
  4. Step 4: Simplify right side
    20,007.68x = 377,787,997.59
  5. Step 5: Solve for x
    x = 377,787,997.59/20,007.68
  6. Step 6: Final answer
    x = 18,882.15

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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.