Home / 20,806.27-28,711.43-11,852.53

Finding the Fourth Proportional to 20,806.27, 28,711.43 and 11,852.53

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Solution

The fourth proportional to 20,806.27, 28,711.43 and 11,852.53 is: 16,355.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.27 : 28,711.43 = 11,852.53 : x
  2. Step 2: Convert to fraction form
    20,806.27/28,711.43 = 11,852.53/x
  3. Step 3: Cross multiply
    20,806.27x = 28,711.43 × 11,852.53
  4. Step 4: Simplify right side
    20,806.27x = 340,302,998.82
  5. Step 5: Solve for x
    x = 340,302,998.82/20,806.27
  6. Step 6: Final answer
    x = 16,355.79

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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.