Home / 20,791.39-28,695.62-11,837.65

Finding the Fourth Proportional to 20,791.39, 28,695.62 and 11,837.65

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Solution

The fourth proportional to 20,791.39, 28,695.62 and 11,837.65 is: 16,337.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.39 : 28,695.62 = 11,837.65 : x
  2. Step 2: Convert to fraction form
    20,791.39/28,695.62 = 11,837.65/x
  3. Step 3: Cross multiply
    20,791.39x = 28,695.62 × 11,837.65
  4. Step 4: Simplify right side
    20,791.39x = 339,688,706.09
  5. Step 5: Solve for x
    x = 339,688,706.09/20,791.39
  6. Step 6: Final answer
    x = 16,337.95

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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.