Home / 13,982.96-20,972.15-4,119.93

Finding the Fourth Proportional to 13,982.96, 20,972.15 and 4,119.93

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Solution

The fourth proportional to 13,982.96, 20,972.15 and 4,119.93 is: 6,179.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.96 : 20,972.15 = 4,119.93 : x
  2. Step 2: Convert to fraction form
    13,982.96/20,972.15 = 4,119.93/x
  3. Step 3: Cross multiply
    13,982.96x = 20,972.15 × 4,119.93
  4. Step 4: Simplify right side
    13,982.96x = 86,403,769.35
  5. Step 5: Solve for x
    x = 86,403,769.35/13,982.96
  6. Step 6: Final answer
    x = 6,179.22

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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.