Home / 13,389.80-20,084.60-4,029.78

Finding the Fourth Proportional to 13,389.80, 20,084.60 and 4,029.78

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Solution

The fourth proportional to 13,389.80, 20,084.60 and 4,029.78 is: 6,044.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.80 : 20,084.60 = 4,029.78 : x
  2. Step 2: Convert to fraction form
    13,389.80/20,084.60 = 4,029.78/x
  3. Step 3: Cross multiply
    13,389.80x = 20,084.60 × 4,029.78
  4. Step 4: Simplify right side
    13,389.80x = 80,936,519.39
  5. Step 5: Solve for x
    x = 80,936,519.39/13,389.80
  6. Step 6: Final answer
    x = 6,044.64

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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.