Home / 13,169.79-19,754.71-5,378.61

Finding the Fourth Proportional to 13,169.79, 19,754.71 and 5,378.61

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Solution

The fourth proportional to 13,169.79, 19,754.71 and 5,378.61 is: 8,067.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.79 : 19,754.71 = 5,378.61 : x
  2. Step 2: Convert to fraction form
    13,169.79/19,754.71 = 5,378.61/x
  3. Step 3: Cross multiply
    13,169.79x = 19,754.71 × 5,378.61
  4. Step 4: Simplify right side
    13,169.79x = 106,252,880.75
  5. Step 5: Solve for x
    x = 106,252,880.75/13,169.79
  6. Step 6: Final answer
    x = 8,067.93

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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.