Home / 13,288.92-19,934.34-5,387.64

Finding the Fourth Proportional to 13,288.92, 19,934.34 and 5,387.64

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Solution

The fourth proportional to 13,288.92, 19,934.34 and 5,387.64 is: 8,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.92 : 19,934.34 = 5,387.64 : x
  2. Step 2: Convert to fraction form
    13,288.92/19,934.34 = 5,387.64/x
  3. Step 3: Cross multiply
    13,288.92x = 19,934.34 × 5,387.64
  4. Step 4: Simplify right side
    13,288.92x = 107,399,047.56
  5. Step 5: Solve for x
    x = 107,399,047.56/13,288.92
  6. Step 6: Final answer
    x = 8,081.85

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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.