Home / 20,806.77-28,711.91-11,732.46

Finding the Fourth Proportional to 20,806.77, 28,711.91 and 11,732.46

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Solution

The fourth proportional to 20,806.77, 28,711.91 and 11,732.46 is: 16,189.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.77 : 28,711.91 = 11,732.46 : x
  2. Step 2: Convert to fraction form
    20,806.77/28,711.91 = 11,732.46/x
  3. Step 3: Cross multiply
    20,806.77x = 28,711.91 × 11,732.46
  4. Step 4: Simplify right side
    20,806.77x = 336,861,335.60
  5. Step 5: Solve for x
    x = 336,861,335.60/20,806.77
  6. Step 6: Final answer
    x = 16,189.99

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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.