Home / 20,949.42-28,901.98-11,992.11

Finding the Fourth Proportional to 20,949.42, 28,901.98 and 11,992.11

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Solution

The fourth proportional to 20,949.42, 28,901.98 and 11,992.11 is: 16,544.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.42 : 28,901.98 = 11,992.11 : x
  2. Step 2: Convert to fraction form
    20,949.42/28,901.98 = 11,992.11/x
  3. Step 3: Cross multiply
    20,949.42x = 28,901.98 × 11,992.11
  4. Step 4: Simplify right side
    20,949.42x = 346,595,723.38
  5. Step 5: Solve for x
    x = 346,595,723.38/20,949.42
  6. Step 6: Final answer
    x = 16,544.41

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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.