Home / 20,849.05-28,764.57-11,890.09

Finding the Fourth Proportional to 20,849.05, 28,764.57 and 11,890.09

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Solution

The fourth proportional to 20,849.05, 28,764.57 and 11,890.09 is: 16,404.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.05 : 28,764.57 = 11,890.09 : x
  2. Step 2: Convert to fraction form
    20,849.05/28,764.57 = 11,890.09/x
  3. Step 3: Cross multiply
    20,849.05x = 28,764.57 × 11,890.09
  4. Step 4: Simplify right side
    20,849.05x = 342,013,326.11
  5. Step 5: Solve for x
    x = 342,013,326.11/20,849.05
  6. Step 6: Final answer
    x = 16,404.26

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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.