Home / 20,849.76-28,772.14-11,651.39

Finding the Fourth Proportional to 20,849.76, 28,772.14 and 11,651.39

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Solution

The fourth proportional to 20,849.76, 28,772.14 and 11,651.39 is: 16,078.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.76 : 28,772.14 = 11,651.39 : x
  2. Step 2: Convert to fraction form
    20,849.76/28,772.14 = 11,651.39/x
  3. Step 3: Cross multiply
    20,849.76x = 28,772.14 × 11,651.39
  4. Step 4: Simplify right side
    20,849.76x = 335,235,424.27
  5. Step 5: Solve for x
    x = 335,235,424.27/20,849.76
  6. Step 6: Final answer
    x = 16,078.62

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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.