Home / 13,626.75-20,440.14-5,418.75

Finding the Fourth Proportional to 13,626.75, 20,440.14 and 5,418.75

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Solution

The fourth proportional to 13,626.75, 20,440.14 and 5,418.75 is: 8,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.75 : 20,440.14 = 5,418.75 : x
  2. Step 2: Convert to fraction form
    13,626.75/20,440.14 = 5,418.75/x
  3. Step 3: Cross multiply
    13,626.75x = 20,440.14 × 5,418.75
  4. Step 4: Simplify right side
    13,626.75x = 110,760,008.63
  5. Step 5: Solve for x
    x = 110,760,008.63/13,626.75
  6. Step 6: Final answer
    x = 8,128.13

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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.