Home / 13,982.97-20,972.13-4,119.93

Finding the Fourth Proportional to 13,982.97, 20,972.13 and 4,119.93

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Solution

The fourth proportional to 13,982.97, 20,972.13 and 4,119.93 is: 6,179.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.97 : 20,972.13 = 4,119.93 : x
  2. Step 2: Convert to fraction form
    13,982.97/20,972.13 = 4,119.93/x
  3. Step 3: Cross multiply
    13,982.97x = 20,972.13 × 4,119.93
  4. Step 4: Simplify right side
    13,982.97x = 86,403,707.55
  5. Step 5: Solve for x
    x = 86,403,707.55/13,982.97
  6. Step 6: Final answer
    x = 6,179.21

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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.