Home / 13,748.22-20,619.90-3,887.28

Finding the Fourth Proportional to 13,748.22, 20,619.90 and 3,887.28

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Solution

The fourth proportional to 13,748.22, 20,619.90 and 3,887.28 is: 5,830.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.22 : 20,619.90 = 3,887.28 : x
  2. Step 2: Convert to fraction form
    13,748.22/20,619.90 = 3,887.28/x
  3. Step 3: Cross multiply
    13,748.22x = 20,619.90 × 3,887.28
  4. Step 4: Simplify right side
    13,748.22x = 80,155,324.87
  5. Step 5: Solve for x
    x = 80,155,324.87/13,748.22
  6. Step 6: Final answer
    x = 5,830.23

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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.