Home / 20,949.93-28,902.66-11,992.61

Finding the Fourth Proportional to 20,949.93, 28,902.66 and 11,992.61

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Solution

The fourth proportional to 20,949.93, 28,902.66 and 11,992.61 is: 16,545.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.93 : 28,902.66 = 11,992.61 : x
  2. Step 2: Convert to fraction form
    20,949.93/28,902.66 = 11,992.61/x
  3. Step 3: Cross multiply
    20,949.93x = 28,902.66 × 11,992.61
  4. Step 4: Simplify right side
    20,949.93x = 346,618,184.83
  5. Step 5: Solve for x
    x = 346,618,184.83/20,949.93
  6. Step 6: Final answer
    x = 16,545.08

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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.