Home / 13,406.16-20,110.52-5,198.80

Finding the Fourth Proportional to 13,406.16, 20,110.52 and 5,198.80

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Solution

The fourth proportional to 13,406.16, 20,110.52 and 5,198.80 is: 7,798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.16 : 20,110.52 = 5,198.80 : x
  2. Step 2: Convert to fraction form
    13,406.16/20,110.52 = 5,198.80/x
  3. Step 3: Cross multiply
    13,406.16x = 20,110.52 × 5,198.80
  4. Step 4: Simplify right side
    13,406.16x = 104,550,571.38
  5. Step 5: Solve for x
    x = 104,550,571.38/13,406.16
  6. Step 6: Final answer
    x = 7,798.70

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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.