Home / 17,138.80-25,698.65-5,289.21

Finding the Fourth Proportional to 17,138.80, 25,698.65 and 5,289.21

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Solution

The fourth proportional to 17,138.80, 25,698.65 and 5,289.21 is: 7,930.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,138.80 : 25,698.65 = 5,289.21 : x
  2. Step 2: Convert to fraction form
    17,138.80/25,698.65 = 5,289.21/x
  3. Step 3: Cross multiply
    17,138.80x = 25,698.65 × 5,289.21
  4. Step 4: Simplify right side
    17,138.80x = 135,925,556.57
  5. Step 5: Solve for x
    x = 135,925,556.57/17,138.80
  6. Step 6: Final answer
    x = 7,930.87

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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.