Home / 20,135.52-30,174.09-11,351.70

Finding the Fourth Proportional to 20,135.52, 30,174.09 and 11,351.70

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Solution

The fourth proportional to 20,135.52, 30,174.09 and 11,351.70 is: 17,011.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.52 : 30,174.09 = 11,351.70 : x
  2. Step 2: Convert to fraction form
    20,135.52/30,174.09 = 11,351.70/x
  3. Step 3: Cross multiply
    20,135.52x = 30,174.09 × 11,351.70
  4. Step 4: Simplify right side
    20,135.52x = 342,527,217.45
  5. Step 5: Solve for x
    x = 342,527,217.45/20,135.52
  6. Step 6: Final answer
    x = 17,011.09

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1.5x scale

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.