Home / 31,578.62-43,592.67-20,829.83

Finding the Fourth Proportional to 31,578.62, 43,592.67 and 20,829.83

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Solution

The fourth proportional to 31,578.62, 43,592.67 and 20,829.83 is: 28,754.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,578.62 : 43,592.67 = 20,829.83 : x
  2. Step 2: Convert to fraction form
    31,578.62/43,592.67 = 20,829.83/x
  3. Step 3: Cross multiply
    31,578.62x = 43,592.67 × 20,829.83
  4. Step 4: Simplify right side
    31,578.62x = 908,027,687.38
  5. Step 5: Solve for x
    x = 908,027,687.38/31,578.62
  6. Step 6: Final answer
    x = 28,754.51

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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.