Home / 10,920.22-16,378.73-5,372.08

Finding the Fourth Proportional to 10,920.22, 16,378.73 and 5,372.08

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Solution

The fourth proportional to 10,920.22, 16,378.73 and 5,372.08 is: 8,057.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.22 : 16,378.73 = 5,372.08 : x
  2. Step 2: Convert to fraction form
    10,920.22/16,378.73 = 5,372.08/x
  3. Step 3: Cross multiply
    10,920.22x = 16,378.73 × 5,372.08
  4. Step 4: Simplify right side
    10,920.22x = 87,987,847.86
  5. Step 5: Solve for x
    x = 87,987,847.86/10,920.22
  6. Step 6: Final answer
    x = 8,057.33

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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.