Home / 13,628.10-20,440.10-3,765.26

Finding the Fourth Proportional to 13,628.10, 20,440.10 and 3,765.26

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Solution

The fourth proportional to 13,628.10, 20,440.10 and 3,765.26 is: 5,647.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.10 : 20,440.10 = 3,765.26 : x
  2. Step 2: Convert to fraction form
    13,628.10/20,440.10 = 3,765.26/x
  3. Step 3: Cross multiply
    13,628.10x = 20,440.10 × 3,765.26
  4. Step 4: Simplify right side
    13,628.10x = 76,962,290.93
  5. Step 5: Solve for x
    x = 76,962,290.93/13,628.10
  6. Step 6: Final answer
    x = 5,647.32

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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.