Home / 20,171.79-27,834.94-11,217.85

Finding the Fourth Proportional to 20,171.79, 27,834.94 and 11,217.85

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Solution

The fourth proportional to 20,171.79, 27,834.94 and 11,217.85 is: 15,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.79 : 27,834.94 = 11,217.85 : x
  2. Step 2: Convert to fraction form
    20,171.79/27,834.94 = 11,217.85/x
  3. Step 3: Cross multiply
    20,171.79x = 27,834.94 × 11,217.85
  4. Step 4: Simplify right side
    20,171.79x = 312,248,181.68
  5. Step 5: Solve for x
    x = 312,248,181.68/20,171.79
  6. Step 6: Final answer
    x = 15,479.45

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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.