Home / 20,834.45-28,751.32-11,881.73

Finding the Fourth Proportional to 20,834.45, 28,751.32 and 11,881.73

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Solution

The fourth proportional to 20,834.45, 28,751.32 and 11,881.73 is: 16,396.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.45 : 28,751.32 = 11,881.73 : x
  2. Step 2: Convert to fraction form
    20,834.45/28,751.32 = 11,881.73/x
  3. Step 3: Cross multiply
    20,834.45x = 28,751.32 × 11,881.73
  4. Step 4: Simplify right side
    20,834.45x = 341,615,421.38
  5. Step 5: Solve for x
    x = 341,615,421.38/20,834.45
  6. Step 6: Final answer
    x = 16,396.66

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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.