Home / 13,470.98-20,198.54-5,151.61

Finding the Fourth Proportional to 13,470.98, 20,198.54 and 5,151.61

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Solution

The fourth proportional to 13,470.98, 20,198.54 and 5,151.61 is: 7,724.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.98 : 20,198.54 = 5,151.61 : x
  2. Step 2: Convert to fraction form
    13,470.98/20,198.54 = 5,151.61/x
  3. Step 3: Cross multiply
    13,470.98x = 20,198.54 × 5,151.61
  4. Step 4: Simplify right side
    13,470.98x = 104,054,963.03
  5. Step 5: Solve for x
    x = 104,054,963.03/13,470.98
  6. Step 6: Final answer
    x = 7,724.38

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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.