Home / 20,863.44-28,791.59-12,369.71

Finding the Fourth Proportional to 20,863.44, 28,791.59 and 12,369.71

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Solution

The fourth proportional to 20,863.44, 28,791.59 and 12,369.71 is: 17,070.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.44 : 28,791.59 = 12,369.71 : x
  2. Step 2: Convert to fraction form
    20,863.44/28,791.59 = 12,369.71/x
  3. Step 3: Cross multiply
    20,863.44x = 28,791.59 × 12,369.71
  4. Step 4: Simplify right side
    20,863.44x = 356,143,628.87
  5. Step 5: Solve for x
    x = 356,143,628.87/20,863.44
  6. Step 6: Final answer
    x = 17,070.23

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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.