Home / 19,511.82-26,939.50-12,808.85

Finding the Fourth Proportional to 19,511.82, 26,939.50 and 12,808.85

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Solution

The fourth proportional to 19,511.82, 26,939.50 and 12,808.85 is: 17,684.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,511.82 : 26,939.50 = 12,808.85 : x
  2. Step 2: Convert to fraction form
    19,511.82/26,939.50 = 12,808.85/x
  3. Step 3: Cross multiply
    19,511.82x = 26,939.50 × 12,808.85
  4. Step 4: Simplify right side
    19,511.82x = 345,063,847.86
  5. Step 5: Solve for x
    x = 345,063,847.86/19,511.82
  6. Step 6: Final answer
    x = 17,684.86

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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.