Home / 20,914.71-28,860.50-11,960.77

Finding the Fourth Proportional to 20,914.71, 28,860.50 and 11,960.77

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Solution

The fourth proportional to 20,914.71, 28,860.50 and 11,960.77 is: 16,504.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.71 : 28,860.50 = 11,960.77 : x
  2. Step 2: Convert to fraction form
    20,914.71/28,860.50 = 11,960.77/x
  3. Step 3: Cross multiply
    20,914.71x = 28,860.50 × 11,960.77
  4. Step 4: Simplify right side
    20,914.71x = 345,193,760.34
  5. Step 5: Solve for x
    x = 345,193,760.34/20,914.71
  6. Step 6: Final answer
    x = 16,504.83

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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.