Home / 13,989.42-20,976.91-4,127.42

Finding the Fourth Proportional to 13,989.42, 20,976.91 and 4,127.42

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Solution

The fourth proportional to 13,989.42, 20,976.91 and 4,127.42 is: 6,189.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.42 : 20,976.91 = 4,127.42 : x
  2. Step 2: Convert to fraction form
    13,989.42/20,976.91 = 4,127.42/x
  3. Step 3: Cross multiply
    13,989.42x = 20,976.91 × 4,127.42
  4. Step 4: Simplify right side
    13,989.42x = 86,580,517.87
  5. Step 5: Solve for x
    x = 86,580,517.87/13,989.42
  6. Step 6: Final answer
    x = 6,189.00

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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.