Home / 13,912.88-20,792.68-10,172.48

Finding the Fourth Proportional to 13,912.88, 20,792.68 and 10,172.48

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Solution

The fourth proportional to 13,912.88, 20,792.68 and 10,172.48 is: 15,202.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.88 : 20,792.68 = 10,172.48 : x
  2. Step 2: Convert to fraction form
    13,912.88/20,792.68 = 10,172.48/x
  3. Step 3: Cross multiply
    13,912.88x = 20,792.68 × 10,172.48
  4. Step 4: Simplify right side
    13,912.88x = 211,513,121.45
  5. Step 5: Solve for x
    x = 211,513,121.45/13,912.88
  6. Step 6: Final answer
    x = 15,202.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.