Home / 31,890.58-47,834.78-17,128.33

Finding the Fourth Proportional to 31,890.58, 47,834.78 and 17,128.33

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Solution

The fourth proportional to 31,890.58, 47,834.78 and 17,128.33 is: 25,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,890.58 : 47,834.78 = 17,128.33 : x
  2. Step 2: Convert to fraction form
    31,890.58/47,834.78 = 17,128.33/x
  3. Step 3: Cross multiply
    31,890.58x = 47,834.78 × 17,128.33
  4. Step 4: Simplify right side
    31,890.58x = 819,329,692.09
  5. Step 5: Solve for x
    x = 819,329,692.09/31,890.58
  6. Step 6: Final answer
    x = 25,691.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.