Home / 20,395.31-30,589.50-5,600.75

Finding the Fourth Proportional to 20,395.31, 30,589.50 and 5,600.75

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Solution

The fourth proportional to 20,395.31, 30,589.50 and 5,600.75 is: 8,400.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395.31 : 30,589.50 = 5,600.75 : x
  2. Step 2: Convert to fraction form
    20,395.31/30,589.50 = 5,600.75/x
  3. Step 3: Cross multiply
    20,395.31x = 30,589.50 × 5,600.75
  4. Step 4: Simplify right side
    20,395.31x = 171,324,142.13
  5. Step 5: Solve for x
    x = 171,324,142.13/20,395.31
  6. Step 6: Final answer
    x = 8,400.17

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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.