Home / 20,171.90-27,834.60-11,217.62

Finding the Fourth Proportional to 20,171.90, 27,834.60 and 11,217.62

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Solution

The fourth proportional to 20,171.90, 27,834.60 and 11,217.62 is: 15,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.90 : 27,834.60 = 11,217.62 : x
  2. Step 2: Convert to fraction form
    20,171.90/27,834.60 = 11,217.62/x
  3. Step 3: Cross multiply
    20,171.90x = 27,834.60 × 11,217.62
  4. Step 4: Simplify right side
    20,171.90x = 312,237,965.65
  5. Step 5: Solve for x
    x = 312,237,965.65/20,171.90
  6. Step 6: Final answer
    x = 15,478.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.