Home / 13,356.80-20,034.72-4,122.80

Finding the Fourth Proportional to 13,356.80, 20,034.72 and 4,122.80

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Solution

The fourth proportional to 13,356.80, 20,034.72 and 4,122.80 is: 6,184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,356.80 : 20,034.72 = 4,122.80 : x
  2. Step 2: Convert to fraction form
    13,356.80/20,034.72 = 4,122.80/x
  3. Step 3: Cross multiply
    13,356.80x = 20,034.72 × 4,122.80
  4. Step 4: Simplify right side
    13,356.80x = 82,599,143.62
  5. Step 5: Solve for x
    x = 82,599,143.62/13,356.80
  6. Step 6: Final answer
    x = 6,184.05

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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.