Home / 13,725.75-20,585.19-5,290.57

Finding the Fourth Proportional to 13,725.75, 20,585.19 and 5,290.57

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Solution

The fourth proportional to 13,725.75, 20,585.19 and 5,290.57 is: 7,934.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.75 : 20,585.19 = 5,290.57 : x
  2. Step 2: Convert to fraction form
    13,725.75/20,585.19 = 5,290.57/x
  3. Step 3: Cross multiply
    13,725.75x = 20,585.19 × 5,290.57
  4. Step 4: Simplify right side
    13,725.75x = 108,907,288.68
  5. Step 5: Solve for x
    x = 108,907,288.68/13,725.75
  6. Step 6: Final answer
    x = 7,934.52

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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.