Home / 20,564.82-28,379.97-12,611.43

Finding the Fourth Proportional to 20,564.82, 28,379.97 and 12,611.43

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Solution

The fourth proportional to 20,564.82, 28,379.97 and 12,611.43 is: 17,404.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.82 : 28,379.97 = 12,611.43 : x
  2. Step 2: Convert to fraction form
    20,564.82/28,379.97 = 12,611.43/x
  3. Step 3: Cross multiply
    20,564.82x = 28,379.97 × 12,611.43
  4. Step 4: Simplify right side
    20,564.82x = 357,912,005.06
  5. Step 5: Solve for x
    x = 357,912,005.06/20,564.82
  6. Step 6: Final answer
    x = 17,404.09

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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.