Home / 20,942.15-28,901.77-11,992.46

Finding the Fourth Proportional to 20,942.15, 28,901.77 and 11,992.46

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Solution

The fourth proportional to 20,942.15, 28,901.77 and 11,992.46 is: 16,550.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.15 : 28,901.77 = 11,992.46 : x
  2. Step 2: Convert to fraction form
    20,942.15/28,901.77 = 11,992.46/x
  3. Step 3: Cross multiply
    20,942.15x = 28,901.77 × 11,992.46
  4. Step 4: Simplify right side
    20,942.15x = 346,603,146.16
  5. Step 5: Solve for x
    x = 346,603,146.16/20,942.15
  6. Step 6: Final answer
    x = 16,550.51

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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.