Home / 20,806.27-28,713.49-11,374.83

Finding the Fourth Proportional to 20,806.27, 28,713.49 and 11,374.83

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Solution

The fourth proportional to 20,806.27, 28,713.49 and 11,374.83 is: 15,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.27 : 28,713.49 = 11,374.83 : x
  2. Step 2: Convert to fraction form
    20,806.27/28,713.49 = 11,374.83/x
  3. Step 3: Cross multiply
    20,806.27x = 28,713.49 × 11,374.83
  4. Step 4: Simplify right side
    20,806.27x = 326,611,039.02
  5. Step 5: Solve for x
    x = 326,611,039.02/20,806.27
  6. Step 6: Final answer
    x = 15,697.72

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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.